To be honest? You've come to the realization of who he truly is and you don't want that (YAY YOU!!) And please don't get hung up on the "idea " of who he could be. I think you know the answer. It's time to move on. Be kind to him, let him know the dynamics have changed, and be good to yourself about it. Yea... He'll get all mad and say some terrible things About you to you. But deep down he's only mad at himself and he knows why.