Most Helpful Guy
You've convinced him that you're an unstable flake. You've also hurt his feelings, deprived him of his honor, and crushed his hopes. And by your very method of trying to "avoid hurt," you caused it. For yourself and him. If you were that determined you wanted no one to get hurt, you should not have bothered to get in bed with him in the first place!
He will likely spread words of warning to others about you. So... good luck with finding a man who will trust you. You sound like you are your own worst enemy, hun.
Most Helpful Girl
Ok first I just gotta say your opening sentence is incredibly offensive. Not sure why you have to lump typical and psychopathic together to describe women.
That being said, just go back and fix it. It's not like you can lose anything, you can be like "hey I'm sorry, I really messed up.. the reason why I said we should stop seeing each other is only because I'm a little insecure and afraid of being hurt. I actually really do like you and really liked what we had together and if you'll forgive me I'd like to try again." And he either says yes and everything's great or he says no, but you already stopped seeing him anyways.