Am I homosexual or Heterosexual? I believe I have OCD and a serious anxiety disorder?

You poor, pathetic sap. Does it really matter all that much to you? Look, if you weren't attracted to men before, then you aren't going to be attracted to men just because your friend came out of the closet, okay? You weren't denying anything, and if you continue to worry so much about it you'll make yourself sick. And I don't know about you, but not much would get a reaction out of me if I was being so worried. Chill, relax, don't think about it, and you'll be fine soon enough.