BigLR:

I haven't seen the movie.

When ideas break into the movie world they can be a harbinger of wider held future social mores.

Dana implies no homosexual tendencies with these guys. Here we have two heterosexual men relatively comfortably considering homosexual sex and one of them married.

Ladies, when you run out in support of your gay friends rights to marry you'll be pushing your daughter's husband (if not yours) into the arms of other men. Enjoy the hiv.

This is a movie about two guys who make a rather stupid dare while stoned and then keep telling each other that not to go through with it is a sign they're not macho enough (gay sex as a sign of heterosexual daring-ood, but not inconceivable). As for the destruction of heterosexuality, well, that's been predicted by reactionary hysterics for centuries now. it hasn't happened. And it won't.