Analysis of survey data from 326 undergraduates at a large southeastern university revealed significant differences between men and women in their sexual beliefs. Specifically, men were more likely to think that oral sex is not sex; that cybersex is not cheating, that men can't tell if a woman is faking orgasm and that sex frequency drops in marriage. Meanwhile, women tended to believe that oral sex is sex, that cybersex is cheating, that faking orgasm does occur and that sex frequency stays high in marriage. Little wonder there is frustration and disappointment between men and men as they include sexuality into their relationship. Implications and limitations of the data are suggested.