If his idea of love is a board game, you don’t want to be a piece.
Not only does the way he treats other girls show what kind of guy he is, but if he is also leading you on and not treating you the way he should, there is nothing that will make him act differently if you were to pursue a relationship. My advice would be to move on and find someone better, who will do everything right, or at least try to. And don’t worry, he’s out there. Don’t waste your time with this one.