Yes, do tap out of this. Whether it's your past speaking or not enough self-respect, now is the time to bolster your self-respect and tell yourself that you deserve and want better (if you want more). This guy wanted a booty call -- ask yourself, is that what you're after? If so, then by all means proceed. But if not and if you are after a real relationship - forget this man. He is not it. He will use you and will most likely hurt you if you want more. He most likely is very hurt by what happened with his gf. A rebound man is never a wise choice, unless you're looking to just hook up. Again, just my two cents because I care!