I don't know about Hollywood being most hetero.
Back in my liberal NYU days, I used to hang out with lots of drama majors, 99% of the guys were gay.
As for Richard Gere, I read a while back that used to live on Broadway and 10th Street in Manhattan, near one of the NYU dorms. Rumor had it that he would come out an openly piss on the streets at nights.
There was also another more gross rumor about what he used to do sexually with gerbils.