According to a study by two psychologists at the University of Texas at Austin, 22 percent of guys would keep dating a woman who cheated on them with a dude, but 50 percent would continue a relationship with a woman who had an affair with another woman, because, obviously, holy crap let's have a threesome!!! Or, as the study's authors put it, more dispassionately, "Men may ... view a partner's homosexual affair as an opportunity to mate with more than one woman simultaneously, satisfying men's greater desire for more partners." [University of Texas]