Young men are eager to "hook up" with women. And many say they have very good female friends. But some of the emotions circulating among guys make it difficult to form and sustain healthy relationships.

Feminism loves men enough to expect them to act more honorably and actually believes them capable of doing so.

My colleagues and I have done a survey of 13,000 students on more than 17 campuses, and we found that while sex in college has always been a bit more casual, "hooking up" has pretty much replaced other traditional forms of dating.

Playing along with Guyland may be the only way an individual woman might believe she has a chance at a social life or a relationship. Sometimes it gets pretty crazy, like a sorority requiring that all the pledges sleep with the members of the "brother" fraternity.

We have the data to prove to men that gender equality is not a zero-sum game, but a win-win.

The good news is that women's roles have changed so dramatically over the past three decades that women now expect to have careers, balance work and family, express their individual autonomy.

Guys constantly talk about pornography in two ways: as revenge and as reassurance. When you live in a world in which beautiful, sexy women are all around you, in the same classes, on the same athletic field, competing for the same jobs, then the pornographic world - the world in which women thrill to male sexual desire - reassures men that although they may feel "one down," they're still entitled to women's bodies.