A lot of guys think that once they have a girlfriend, all other women must immediately become unattractive to them, or they're morally bankrupt. That's not only silly, it's unnatural and unhealthy--for both partners. But on the other hand, if you have an intense desire to actually be with other women, you should examine whether your relationship is right for you. In this Q&A, Geoff, Nils & Tucker unpack all the issues that surround the "flirting with other women while in a relationship" question.