I don't see the confusion. I am and man, and a certified hard-core (very hard core) Lesbian myself.
But really, there were guys in college who acted gay, or at least very effeminate, to get in the circles of girly, girly girl. And it worked. Those guys were invited to sleep overs and sorority houses that I was legally required to stay away from by at least 100 yards. And when the girls got dumped, or thought they were ugly, or just got generally depressed, they had a shoulder right there waiting for them to cry on. (and more)