homophobia is about manliness, which has to be proved by sleeping with women. As I noticed even on this thread, it is the male posters who have problem with men/man relatuionships. It sounds to me that they are threatened and afraind that of they find the male body attractive, they are not man enough. That is why I said it had little to do with sex per se, but more with the fear of one not being manly enough.
I am really frustrated that your post, which makes so much sense, is going largely ignored by the PFers :(