No, they're not being made up 😂 I never just pull claims out of my arse, and have looked into this before.
80% of the men you choose may have cheated, however.
UK and America are roughly the same.
yougov dot co.uk/society/articles/12404-one-five-british-adults-admit-affair
And cheaters usually cheat more than once.
"The survey also reveals that, of those who say they have had an affair, only half have stopped at one. A quarter have had two affairs, while 20% have had three or more. 8% have had five or more affairs."
discreetinvestigations. ca/infidelity-statistics-who-cheats-more-men-or-women/
The Institute for Family Studies (IFS) ifstudies dot org/blog/who-cheats-more-the-demographics-of-cheating-in-america surveyed men and women from 2010 to 2016 who were either married or had been married before. According to the General Social Survey, men are more likely to cheat than women, with 20% of men and 13% of women reporting having sex with someone other than their partner while still married.
However, the gender gap varies per age. From the same survey, data from married adults ages 18 to 29 says that more women are guilty of infidelity, with 11% of the women from the surveyed group admitting to having an affair. In comparison, only 10% of men from the age group are guilty. But the gap reverses as it jumps into the next age group.
Among those ages 30 to 39 years old, infidelity in men increases, with 14% of the surveyed group saying that they cheated on their partner, and only 11% of women admitted to having an affair. With age, cheating has become more prevalent. Men in their 60s report having a higher rate of infidelity (24%), with the number still increasing until ages 70-79, with 26% of men cheating on their partners. Women, on the other hand, have the highest rate of infidelity in their 60s (16%), but the number goes down as they approach their 70s (13%) and 80s (6%).
Supporting data from the IFS 1990s survey also says that men have always been more inclined to cheat than women. But during this period, older men have the same tendency to cheat as their younger peers. The survey says that infidelity among men peaked at the age of 50 to 59 (31%). The number decreases as the men age during this period. For women, the highest infidelity rate is from ages 40 to 49 (18%), which declines as they age.