Don't fuck your best friend. This rule seems obvious enough, and yet I couldn't help testing it.

We've have been friends since high school, but since we had sex, we barely talk anymore. I’m uncomfortable around him, and being around me hurts him. I don’t want to have sex with him and he still wants to have sex with me. Sex has put a huge strain on our friendship and his sanity. I keep thinking of the recent story in the news about the male best friend who kidnapped, tied up, and took naked photos of his female best friend in hopes of blackmailing her into having sex with him once a week. Not a good way to get sex.