How Common Is Cheating in Marriages? (2026 Data)

# How Common Is Cheating in Marriages? (2026 Data)

You found a strange text on your spouse's phone. A coworker made an offhand comment about seeing your partner's profile on a dating app. Or maybe nothing specific happened at all — just a slow, creeping feeling that something is off. Whatever brought you here, you want to know: how common is cheating in marriages, really?

The answer depends on how you define cheating, which study you read, and whether you believe what people tell researchers. But the data we do have — drawn from decades of nationally representative surveys — paints a clear picture. Infidelity is not rare. It is not an anomaly. And it may be more common than the headline numbers suggest.

Here is what the research actually says, broken down by gender, age, relationship length, and type of affair — along with the reasons the real numbers are almost certainly higher than any survey can capture.

If the data here has you concerned, CheatScanX can give you a direct answer. It searches 15+ dating apps for hidden profiles.

The Short Answer: How Common Is Cheating in Marriages?

The most widely cited data on marital infidelity comes from the General Social Survey (GSS), a nationally representative survey conducted by NORC at the University of Chicago since 1972. According to the GSS, 20% of married men and 13% of married women report having had sexual intercourse with someone other than their spouse while married (General Social Survey, 2022).

That means roughly 1 in 5 husbands and 1 in 8 wives admit to a physical affair at some point during their marriage.

But those numbers only measure one specific behavior: sexual intercourse outside the marriage. When researchers expand the definition to include emotional affairs, online relationships, and sexual activity short of intercourse, the figures climb sharply. The American Association for Marriage and Family Therapy (AAMFT) estimates that 45% of men and 35% of women have engaged in some form of infidelity during their marriage.

Here is a summary of the key prevalence estimates:

The wide range in these estimates is not a sign of bad research. It reflects a genuine measurement problem: the answer to "how common is cheating" depends entirely on what you count as cheating. A spouse who has a months-long emotional affair with a coworker may never appear in a study that only asks about sexual intercourse.

For a broader look at infidelity across all relationship types, see our full breakdown of cheating statistics.

Infidelity Rates by Gender

Men cheat more often than women — but the gap is not as large as many people assume, and it varies dramatically by age.

Overall Gender Gap

Across all age groups, the GSS data shows a consistent pattern: 20% of ever-married men versus 13% of ever-married women report extramarital sex. That is a 7-percentage-point gap. The Institute for Family Studies (IFS) has analyzed this data extensively and confirmed the pattern across multiple survey waves.

The Narrowing Gap Among Younger Adults

Among ever-married adults ages 18 to 29, the gender gap essentially vanishes. Women in this age group are actually slightly more likely to report infidelity than men — 11% of women versus 10% of men (Institute for Family Studies, 2024). This reversal is a recent development and may reflect changing social norms, greater financial independence among younger women, or shifts in how women report sensitive behavior.

The gap begins to widen in the 30-to-34 age range and grows steadily from there. By ages 70 and older, the gap is enormous: 26% of men versus about 13% of women report infidelity.

Why the Gender Gap Exists (and Is Shrinking)

Researchers point to several factors behind the historical gender gap. Men have traditionally had more opportunity for extramarital contact through workplace settings, travel, and social norms that tolerated male infidelity more than female infidelity. Women, on the other hand, have faced stronger social stigma for affairs, which may suppress both the behavior and the willingness to report it.

The shrinkage of this gap over time is well documented. Female infidelity has risen by approximately 40% over the past 35 years, while male infidelity rates have remained relatively stable (Survey Center on American Life, 2024). Whether this represents an actual increase in female cheating or an increase in willingness to report is a question researchers continue to debate.

If you are worried about a partner's behavior, these guides cover the specific warning signs to watch for: signs your husband is cheating on his phone and signs your wife is cheating on her phone.

How Age Affects Cheating Rates

Age is one of the strongest predictors of infidelity, but the pattern differs for men and women.

Men: Infidelity Peaks Later in Life

For men, cheating rates climb steadily with age. The highest rates appear among men in their 70s, where 26% report having cheated on their spouse. Even among men 80 and older, the rate remains high at 24% (Institute for Family Studies, 2024). This likely reflects cumulative risk — the longer a man has been married, the more opportunity he has had for an affair.

The steady climb also coincides with career progression. Men in their peak earning years (40s through 60s) tend to have more professional travel, more business dinners, and more workplace relationships that can cross boundaries. A separate IFS analysis found that men in high-prestige occupations — CEOs, physicians, and surgeons — reported cheating at nearly double the rate of men in middle-prestige jobs (18% vs. 7%).

Women: A Different Curve

Women's infidelity rates follow a different pattern. Rates rise through midlife, peaking among women in their 60s at about 16%, then drop sharply among women in their 70s and 80s (Institute for Family Studies, 2024). The peak in the 60s may coincide with changes in marital satisfaction, empty-nest transitions, or a reassessment of personal fulfillment after decades of caregiving.

The drop-off in older age groups is notable. Among women 80 and older, just 6% report ever having cheated — the lowest rate of any demographic group. Whether this reflects genuine behavioral differences, generational attitudes about reporting, or health-related factors is unclear. Researchers caution against treating older cohorts as a direct comparison to younger ones, because social norms around female sexuality have shifted dramatically over the past several decades.

Infidelity Rates by Age Group

Source: Institute for Family Studies analysis of General Social Survey data, 2024

These numbers carry an important caveat: they measure lifetime infidelity among ever-married adults. A 70-year-old man who cheated once at age 35 still counts in the data for the 70+ group. The rates reflect accumulated behavior over an entire marriage, not the likelihood of cheating in any given year.

Education and Race

Demographic factors beyond age and gender also shape infidelity rates. The Institute for Family Studies found that adults with a college education are less likely to cheat than those without one (10% vs. 15%), though this effect is stronger for women than for men.

Race also plays a role. Black adults report the highest infidelity rates (22%), followed by white adults (16%) and Hispanic adults (13%), according to GSS data analyzed by the Institute for Family Studies. Researchers note that these differences are partially explained by other demographic factors like income, education, and religious attendance, rather than race alone.

For a deeper dive into overall infidelity numbers across all demographics, see what percentage of people cheat.

The Role of Dating Apps in Modern Infidelity

The rise of dating apps has given married individuals new, discreet channels for infidelity — and the data suggests a meaningful number of married people are using them.

How Many Married People Use Dating Apps?

A study published in Computers in Human Behavior found that 18% to 25% of Tinder users are already in a committed relationship while using the app. A separate report from the Survey Center on American Life found that roughly 1 in 10 married adults under 40 still have an active dating app profile.

Those are striking numbers. If 10% of young married adults maintain a dating app presence, it suggests that digital infidelity — or at least the temptation infrastructure for it — is far more widespread than physical affairs alone.

Social Media as a Gateway

Dating apps are not the only digital threat. Research shows that 38% of affairs now begin through social media platforms, not in person (PR Newswire, 2024). Platforms like Instagram, Facebook, and Snapchat create low-friction opportunities for reconnecting with ex-partners, building emotional intimacy with coworkers, or striking up conversations that gradually cross boundaries.

For more on the specific platforms involved, see our full report on dating app cheating statistics and the apps cheaters use most often.

The Opportunity Factor

One consistent finding in infidelity research is that opportunity matters. People cheat when the conditions make it easy and the perceived risk of getting caught is low. Dating apps reduce both friction and risk. Profiles can be hidden, messages can be deleted, and entire accounts can be created and destroyed in minutes.

Before dating apps, starting an affair required some combination of proximity, social overlap, and in-person interaction. Apps bypass all of that. A married person can download Tinder, Bumble, or Hinge during a lunch break, create a profile with no identifying photos, and begin messaging potential partners — all without anyone in their social circle knowing.

The secrecy tools built into modern phones compound this. Many dating apps offer features like hidden notifications, passcode locks, or the ability to hide the app icon entirely. Some messaging platforms auto-delete conversations. For a look at how these tools work, see our guide on secret messaging apps used for cheating.

Has Technology Actually Increased Cheating Rates?

This is a question researchers still debate. Some argue that dating apps and social media have increased the total number of affairs by lowering the barrier to entry. Others contend that technology has simply shifted the method — people who would have cheated anyway now do so through apps instead of through workplace affairs or chance encounters.

The GSS data provides a partial answer. Overall extramarital sex rates have remained relatively stable over the past two decades, even as smartphone adoption exploded. Male infidelity has actually declined slightly — from 21% in the 1990s to around 11-20% depending on the age group measured (Institute for Family Studies, 2024). Female infidelity has been more stable, hovering around 14%.

This does not mean apps have no effect. The stability in physical infidelity rates may mask an increase in emotional and digital infidelity — categories that the GSS does not measure well. And the 1-in-10 figure for married adults under 40 with active dating profiles suggests that a meaningful number of spouses are at least keeping the door open.

This is part of why tools that scan dating apps for hidden profiles have become relevant. If you suspect your spouse may have an active dating profile, you can find out if your partner is on dating apps without needing to create your own account.

For specific platform concerns, our Tinder cheating statistics article covers the data on that app in detail.

Cheating Rates by Length of Marriage

How long you have been married affects your risk of experiencing infidelity — and the data shows a clear pattern.

The Seven-Year Mark

Research consistently identifies the period around year seven as a critical inflection point. The average married woman who has an affair reports that it first occurred approximately seven years into the marriage, often after a decline in sexual frequency and satisfaction that begins around the five-year mark (Couples Academy, 2024).

This aligns with the popular concept of the "seven-year itch," but the data suggests the underlying cause is not boredom alone. Years five through seven often coincide with the stress of raising young children, career demands, and a gradual decline in the intentional relationship maintenance that characterized earlier years.

Cumulative Risk Over Time

Infidelity risk does not flatten after year seven. Research shows that with each passing year of marriage, the probability of a man engaging in infidelity increases by over 6% (World Population Review, 2024). The highest self-reported infidelity rates come from adults who have been married 20 to 30 years and are between ages 50 and 60.

This cumulative pattern makes sense. Longer marriages provide more time for dissatisfaction to build, more opportunity for workplace or social connections to develop into something inappropriate, and more exposure to life transitions (midlife, empty nest, retirement) that can destabilize a relationship.

The Workplace Factor

Across all marriage lengths, the workplace remains one of the most common settings for affairs to develop. A 2024 survey found that 31% of affairs involve a coworker (PR Newswire, 2024). Workplace affairs tend to develop gradually — shared lunches become private conversations, professional admiration becomes emotional dependence, and physical boundaries erode over weeks or months.

This risk is especially high during the mid-career years (roughly years 10 through 20 of marriage), when professional networks are largest and domestic routines are most established. Spouses with jobs that involve travel, long hours, or close collaboration with opposite-sex colleagues face elevated exposure to opportunity.

What This Means in Practice

If you are in a long-term marriage and have noticed shifts in your partner's behavior — increased secrecy with their phone, unexplained absences, or emotional withdrawal — the statistical context matters. These are not just vague worries. They align with documented risk periods. For specific behavioral changes to watch, see phone habits of a cheating husband and long-distance cheating signs.

Emotional Cheating vs. Physical Cheating: Which Is More Common?

One of the biggest limitations in infidelity research is that most major surveys only ask about sexual intercourse. This leaves out emotional affairs — which many relationship experts consider equally damaging and which appear to be far more widespread.

Prevalence of Emotional Affairs

While 20% of men and 13% of women admit to physical affairs, research on emotional infidelity tells a very different story. One study found that 91.6% of women and 78.6% of men admit to having had an emotional affair at some point — defined as a deep emotional connection with someone outside the relationship that involves secrecy and emotional intimacy that should be reserved for a partner (AAMFT; Dr. Kathy Nickerson, 2024).

That is an enormous gap between physical and emotional infidelity rates. Even accounting for generous definitions of "emotional affair," the data suggests that most married people have, at some point, crossed emotional boundaries outside their marriage.

How Americans Define Cheating

A study from the Institute for Family Studies found that 76% of U.S. adults believe a married person having a secret emotional relationship in real life constitutes cheating. Another 72% said an online secret emotional relationship would also count as infidelity (Institute for Family Studies, 2024).

This means the public's understanding of infidelity is far broader than what most surveys measure. When people ask "how common is cheating in marriages," they are usually not limiting the question to sexual intercourse.

Gender Differences in Impact

The research also shows gender differences in which type of affair causes more pain. About 73% of women report they would be more upset by emotional infidelity than by a purely physical affair. Men are more evenly split, though a majority still consider emotional affairs a serious betrayal. Overall, 64% of couples say an emotional affair can be just as damaging — or more harmful — than a physical one.

If you are seeing signs of emotional intimacy between your spouse and someone else, our guide on signs of emotional cheating through texting covers the specific patterns to watch for.

Why the Numbers Might Be Higher Than Reported

Every major infidelity study relies on self-reported data. And there are strong reasons to believe that self-reported rates undercount actual infidelity.

The Social Desirability Problem

Admitting to cheating — even in an anonymous survey — carries psychological weight. Infidelity violates deeply held social norms, and acknowledging it forces people to reconcile their behavior with their self-image. Researchers call this "social desirability bias," and it is one of the most well-documented problems in infidelity research.

A landmark study published in Personality and Individual Differences used a "bogus pipeline" technique — participants believed their responses were being monitored by a lie detector. Under these conditions, reported cheating rates changed significantly. Gender differences in reporting shrank, and participants disclosed higher levels of extradyadic behavior when they believed they could not lie without being detected (Fisher & Brunell, 2014).

Awareness Gaps

Not all betrayed spouses know they have been cheated on. Studies that measure infidelity from the perspective of the non-cheating partner assume that the partner is aware of the affair. Given the secretive nature of infidelity, this assumption is often wrong. Research from a study of nearly 95,000 individuals found that 56.8% of cheaters eventually confessed on their own, while 21.5% were caught by their partner (Psychology Today, 2024). That leaves a significant percentage of affairs that may never be discovered.

Definitional Gaps

As discussed above, most major surveys only ask about sexual intercourse. They miss:

• Emotional affairs
• Online-only relationships
• Sexting and exchange of explicit content
• Use of dating apps without physical meetings
• "Micro-cheating" behaviors like maintaining active dating profiles

When these behaviors are included, the rates jump dramatically. The gap between the GSS figure of 13–20% and the AAMFT figure of 35–45% reflects this definitional difference.

What This Means for You

If you are trying to assess your own situation, the official statistics represent a floor, not a ceiling. The true prevalence of marital infidelity — broadly defined — is almost certainly higher than any single study reports. Trust your observations. If you have a gut feeling he's cheating, the research supports taking that instinct seriously.

How Many Marriages Survive Infidelity?

Discovering an affair does not automatically mean the end of a marriage. The data on post-infidelity outcomes is more nuanced than many people expect.

Immediate Survival Rates

Research shows that 60% to 75% of couples stay together immediately after the discovery of an affair. This figure surprises many people, but it reflects the reality that marriages involve shared finances, children, social networks, and years of invested history. Leaving is not a simple decision, even after betrayal.

However, staying together and recovering are two different things. Many couples who remain married after infidelity report ongoing trust issues, resentment, and emotional distance for years afterward. Some researchers distinguish between "staying married" and "recovering the marriage" — and the rates for genuine recovery are considerably lower than the rates for simply not divorcing.

Divorce Statistics Related to Infidelity

The American Psychological Association estimates that 20% to 40% of divorces are directly linked to infidelity. Other data puts the figure even higher: one analysis found that 54.5% of cases where infidelity occurred eventually led to divorce.

The variation in these numbers reflects different study designs and time horizons. Some couples who stay together immediately after discovery still divorce years later. The short-term survival rate of 60-75% does not tell the full story of what happens five or ten years down the road.

The Role of Therapy

Professional help makes a significant difference. A 2012 study by the American Association for Marriage and Family Therapy found that 74% of couples who pursued therapy after an affair were able to recover and rebuild their relationship. That is substantially higher than the recovery rate for couples who try to work through it alone.

Disclosure Matters

How the affair comes to light also affects outcomes. Research shows that when the cheating spouse confesses voluntarily, the divorce rate is approximately 43%. But when the affair is discovered rather than disclosed — and the cheating spouse does not come forward on their own — the divorce rate climbs to roughly 80% (Couples Academy, 2024).

This is a significant finding. It suggests that honesty after infidelity, while painful, substantially improves the odds of the marriage surviving.

Long-Term Outcomes

For couples who do stay together, full trust restoration typically takes two to five years of sustained effort. Many therapists describe recovery from infidelity as one of the hardest challenges a marriage can face.

The outcomes also differ depending on the type of affair. Couples recovering from a one-time physical encounter generally have better long-term prospects than those dealing with a prolonged emotional and physical affair. The duration, depth, and emotional investment of the affair all affect how difficult recovery will be.

Research from the University of Denver found that people who cheated in one relationship have 3 times the odds of cheating in a subsequent relationship (Archives of Sexual Behavior, 2017). This means that even couples who successfully recover must contend with an elevated statistical risk of recurrence — a painful reality that makes trust rebuilding even harder.

If you have already discovered infidelity and are trying to decide what to do, our guide on how to confront a cheater covers the practical steps, and should I check my partner's phone addresses one of the most common dilemmas.

Warning Signs That Your Marriage May Be at Risk

While no set of behaviors guarantees that a spouse is cheating, the research identifies clear risk factors and behavioral red flags.

Demographic Risk Factors

Based on the Institute for Family Studies data, the following demographic factors are associated with higher infidelity rates:

• Income over $150,000: Earners above this threshold show a 47% infidelity rate compared to 22% for those under $75,000
• High-prestige occupations (men): Nearly 1 in 5 men in high-prestige jobs (CEOs, physicians, surgeons) report cheating, compared to 7% of men in upper-middle prestige jobs
• Economic dependency: Men who are financially dependent on their wives are 5 times more likely to cheat than men earning comparable incomes (UConn, 2015)
• Lack of religious attendance: Adults who rarely or never attend religious services report infidelity rates of 18%, versus 8% for regular attendees
• Non-intact family background: Adults who did not grow up in an intact family report higher infidelity rates (18% vs. 15%)
• Prior infidelity: People who cheated in a previous relationship have 3 times the odds of cheating again (University of Denver, 2017)

Behavioral Warning Signs

Beyond demographics, specific behavioral changes may signal that something is wrong:

• Increased phone secrecy: New passwords, face-down phone placement, leaving the room for calls
• Unexplained schedule changes: New "work events," late nights, or weekend errands that do not add up
• Emotional withdrawal: Less conversation, less physical affection, less interest in shared activities
• Appearance changes: Sudden interest in fitness, new clothing, or grooming habits without an obvious reason
• Defensiveness: Overreaction to simple questions about their day or whereabouts

For detailed behavioral guides, see signs your partner is cheating and hidden dating apps on a phone.

Communication Patterns

Research consistently finds that couples with low weekly communication are 2.4 times more likely to experience infidelity (PR Newswire, 2024). If you and your spouse have stopped having meaningful conversations — not just logistical exchanges about kids and schedules — that silence itself is a risk factor.

What the Research Says About Prevention

Infidelity is not inevitable, even in long-term marriages. The same research that documents cheating rates also identifies protective factors.

Communication Is the Strongest Shield

Across multiple studies, strong communication skills are the single most protective factor against infidelity. Couples who can discuss difficult topics — including sexual dissatisfaction, unmet emotional needs, and concerns about the relationship — are significantly less likely to seek those conversations outside the marriage.

This does not mean "talk more." It means building the ability to have honest, vulnerable conversations about the state of the relationship without defensiveness or shutdown.

Sexual Satisfaction Reduces Temptation

The data here is striking. Among couples who describe themselves as "extremely satisfied" with their sex life, only 17% say they would be tempted to cheat. Among couples who are sexually unsatisfied, that figure rises to 52% — a threefold increase (South Denver Therapy, 2026).

Sexual satisfaction is not just about frequency. It includes feeling desired, mutual attentiveness, and willingness to discuss what each partner needs.

Commitment and Shared Investment

Research across five cultures found that the following factors consistently reduced infidelity risk:

• Being faithful oneself
• Having children together
• Not acting on feelings of attraction toward others
• Performing deliberate acts that strengthen mutual love within the marriage

Personal dedication commitment — as distinct from feeling "stuck" in a marriage — is strongly and negatively associated with infidelity. People who stay married because they want to, not because they feel they have to, are far less likely to cheat.

Professional Support

Couples therapy is not just for crisis recovery. Research shows that proactive therapy — addressing communication patterns and satisfaction before problems become severe — can significantly reduce the likelihood of infidelity by increasing both relationship satisfaction and commitment.

Addressing the Underlying Reasons

Research consistently identifies four primary drivers of infidelity: emotional dissatisfaction, sexual dissatisfaction, opportunity, and low commitment. Understanding which of these is most relevant to your marriage can help you target your prevention efforts.

For women who cheat, emotional dissatisfaction is the primary driver in 70% of cases — they feel unheard, unappreciated, or emotionally disconnected from their spouse. For men, the motivations are more mixed, with sexual dissatisfaction, opportunity, and emotional factors all playing significant roles (South Denver Therapy, 2026).

Addressing these root causes directly — through honest conversation, couples therapy, or individual reflection — is more effective than surveillance or control-based approaches. Prevention works best when both partners actively invest in the quality of the relationship.

Digital Boundaries

Given the role of dating apps and social media in modern infidelity, establishing clear digital boundaries is a practical protective step. This might include:

• Mutual transparency about phone and app usage
• Agreed-upon boundaries around social media interactions with ex-partners
• Periodic check-ins about whether either partner feels tempted or disconnected
• Open conversations about what each partner considers a boundary violation

These conversations are not about suspicion or control. They are about establishing shared expectations before problems develop. Couples who proactively define what counts as crossing a line are better positioned to hold each other accountable.

If you want to verify that a partner has truly stepped away from dating platforms, tools like best cheater finder apps and services that find out if your partner is on dating apps can provide that confirmation.

Putting the Data in Perspective

The statistics on marital infidelity can feel overwhelming. Knowing that 1 in 5 husbands and 1 in 8 wives admit to affairs — and that the true numbers are likely higher — is unsettling.

But context matters. These are lifetime figures, not annual rates. In any given year, the vast majority of married people remain faithful. And the data also shows that marriages can recover from infidelity, that protective factors are well understood, and that couples who invest in their relationship reduce their risk substantially.

If you are reading this because something feels wrong in your own marriage, the numbers are not a verdict. They are context. Trust your instincts, pay attention to changes in behavior, and seek information rather than ignoring what you are seeing.

If the data here has you concerned, CheatScanX can give you a direct answer. It searches 15+ dating apps for hidden profiles.

For related guides, start with how to catch a cheater, how to catch a cheating husband, or how to catch a cheating wife. If your partner's phone behavior has changed, see secret messaging apps used for cheating and boyfriend still has dating apps.

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