I think I was born in the wrong decade.
The sex ratio on many U.S. campuses is around 60/40 and rising. The NYTimes has an excellent piece on the predictable consequences for dating.
North Carolina, with a student body that is nearly 60 percent female, is just one of many large universities that at times feel eerily like women’s colleges…Needless to say, this puts guys in a position to play the field, and tends to mean that even the ones willing to make a commitment come with storied romantic histories. Rachel Sasser, a senior history major at the table, said that before she and her boyfriend started dating, he had “hooked up with a least five of my friends in my sorority — that I know of.”
via Marginal Revolution: Supply and Demand.