Experts have pinpointed certain ages when individuals are more likely to cheat, as well as the reasons and warning signs to be aware of. Relationships require effort and can go through tough phases that may lead to infidelity, a common issue in many partnerships.
In 2021, a Statista survey revealed that 21% of U.S. participants admitted to cheating on a current or former partner. According to the Institute of Family Studies, men are more likely to be unfaithful, with 20% of men and 13% of women reporting infidelity in marriage, based on data from the 2017 General Social Survey.
Ages Likely to Cheat:
While discussions around gender and cheating are common, less focus has been placed on the ages when infidelity tends to occur. Infidelity coach and author Albert Arnaiz notes that people are more prone to cheat at ages 29, 39, and 49. Relationship counselor Albertina Fisher highlights age 29 as a key risk period, as many couples are marrying or having their first child. Fisher explained that men adjusting to fatherhood may feel neglected, which can trigger affairs.
At 39, intimacy coach Nicola Foster suggests that those who were more casual in their 20s and married in their 30s may begin questioning their long-term compatibility with their spouse. Approaching 40, both men and women may feel confined, especially when children are involved. At 49, individuals may face midlife crises and feel emotionally distant from their spouse after many years together. For women, menopause at this age can also lead to intimacy challenges.
Signs of Cheating:
Private investigator Aaron Bond told The Sun about potential red flags for infidelity. If a partner becomes secretive with their phone, changes passwords, or takes the phone everywhere, this could signal cheating. A defensive reaction when asked to use their phone or turning it face down are other warning signs.
A cheating partner might also stop sharing details about their day to avoid guilt. Changes in sexual behavior can also be a clue—cheaters may either engage less in sexual activity at home or, alternatively, increase intimacy to cover up their actions and reduce their guilt.