An online study by researchers at Indiana University's Center for Sexual Health Promotion, The Kinsey Institute for Research in Sex, Gender and Reproduction, and the University of Guelph surveyed 506 men, average age 33, and 412 women, average age 28, who indicated being heterosexual and in a monogamous sexual relationship. The study is the first to look at the influence of lovers' sexual personality traits on infidelity. For women, they might seek feelings of closeness elsewhere if they aren't happy with their relationship. Women reporting low relationship happiness were 2.6 times more likely to report having engaged in infidelity and those who perceived low compatibility in terms of sexual attitudes and values were 2.9 times more likely to cheat. For men, they became sexually aroused by all kinds of triggers and situations. A big reason they found was that a man's sexual performance failure might make them more likely to cheat might, which sounds counter-intuitive. "People experiencing this might seek out high-risk situations to overcome arousal problems, or might feel less pressure to impress someone outside of their primary relationship than they do with their partner, said lead author and researcher, Kristen Mark. "A new partner also wouldn't know your history of having performance concerns or other issues."
Overall, the rates of infidelity were very close 23 percent for men and 19 percent for women. For more, click here.