Here’s an article by a Duke University student that talks about the hook-up phenomenon.

Excerpt:

Every weekend, girls across Duke’s campus wake up sad and confused. The previous night’s choices have not left them fulfilled or content. My girlfriends always seem hurt while the guys easily move on to their next fling. Why are the women upset? After all, it was supposed to be just sex-just one of the “responsible social decisions” discussed in The Real Deal. Without an explanation for their emotions, my friends are left feeling used and embarrassed. All I could do is sit with these women while they let painful tears flow.

Our women’s center and sexual health groups failed to tell us the whole truth. They may warn of the physical risks of “unsafe sex” but tend to ignore its emotional toll which also has biological roots. Research suggests that a hormone called oxytocin plays a role in the feelings of attachment and trust that women feel for their sexual partners. Female mammals primarily release oxytocin while giving birth and breast feeding and the hormone facilitates mother-child bonding. Oddly enough, the same hormone is also released during sexual contact causing a sense of attachment. In men, oxytocin’s effects are neutralized by the release of testosterone.

Did you catch that ladies? There is a biological explanation for the way you feel and the way he doesn’t feel.

I had always thought casual sex had different consequences for men and women. Now, based on scientific evidence, I know it does. College women at Duke are suffering emotional pain that’s not only avoidable-but, predictable.

Why weren’t we told this three years ago?

[…]The explanation is a radical feminist agenda that has a foothold in women’s health discussions. As Dr. Miriam Grossman, a psychiatrist at UCLA suggests in her book, Unprotected, “I once assumed campus medicine and psychology had one priority: student well-being. I’m no longer so naive. Radical politics pervades my profession, and common sense has vanished.” To propose that “safe” sexual experimentation may not be emotionally healthy and may be more dangerous for women than men is not politically correct.

Premarital sex hurts women. But it also hurts men.

It’s not like men are going to be happy about transitioning from years of hooking up with no responsibilities to the rigorous demands of a marriage. Premarital sex destroys the ability of women and men to bond, because it trains them to separate out their emotions from sex. It makes no sense to expose yourself emotionally during sex if you’re not married – you run the risk of being crushed by the pain of separation. Do it enough times, and it becomes extremely difficult to allow sex to bond two people together emotionally.