Im realy sorry for what has happened to you.I know how you feel but the thing is that he thought he wasnt in any relationship but he was .cuz he acted like your bf ,he is just lying to him self.The way you wrote I think you are loving and caring person and there are people who looking exactly for these qualities in a woman .And I think you better not having any relationship with him any more he has commitment problems for sure.Take care and know that you are not alone .