I keep making the same mistake

I fall head over heels for the ones that fall just for head. I can't think straight, or at least just keep having sex with bi men that are better off straight. I don't think i've been in a relationship where my main point of value wasn't sex, where men didn't sabotage their families feelings to satiate their sexual fantasies. It was hard to let him go. I know he doesn't treat me right but it was so much better than being alone at night. But its not really any better,