Agh, it's the only movie I ever walked out on. Carnal Knowledge. But if you have an even grottier idea, more power to you!

I think sex within a committed relationship is an magnificent ideal and I adhere to it myself, but if you consider 25+-year gay relationships to be outside marriage, I'm afraid my sex life wouldn't make much of a horror movie.

In fact, I don't know it would sell well as a porno either, or a comedy -- maybe something on the homes and gardens channel.