Anderson also happens to be the "chief science officer" at Ashley Madison. Anderson and his fellow scientists surveyed 100 straight, married women between the ages of 25 and 45 to find out why women cheat. AdvertisementAccording to research, 67% of happily married women want to cheat because they feel their relationship lacks passion. According to a 2023 study, nearly 50 percent of married women and 60 percent of married men will have an extramarital affair at some point in their marriage. AdvertisementIf anything, Ashley Madison appears to be doing a great service to these women, whose husbands appear to have forgotten them.