Of course he wants to patch things up with you he just got kicked out of a relationship! While he deserves support for his own problems in life, you are not really the person obligated to give him that. He sounds like he may just be using you until his wife comes around or he finds someone else.

Sometimes I think we are in love with the IDEA of someone, rather than the reality of who they are. Every time they do something that hurts us and doesn't fit in with our idea of them as a "knight in shining armor" or "bad boy with a heart" or whatever, we just set the reality aside and let ourselves get hurt.