pretty simple, has nothing whatsoever to do with religous attitude
people fear what they can't understand.... most straight people will never be able to understand the sexual drives of someone who is bi or gay, thus most straight people deep down even if they say other wise are slightly homophobic, I myself have nothing against bi or gay people, live and let live

as for your friend... what an idiot, if he can't see past that then he ain't no real friend.

but there is one thing I do find odd...

most men dislike gay or bi men.. but the idea of a woman yeah they like that (not I.. I prefer my girl to be MY girl)

most woman dislike gay or bi women... but the idea of a gay man isn't a big deal...

I think the easiest solution is if someone doesnt know what drives another person, then not to give a damn....
I don't know what drives someone to be gay, I do know I'm not gay, so why should it ever bother me unless some guy is trying to get me in the sack lol

live n let live ppl !