I'm going to put another spin on the situation. How do we know that he's not trying to win you back by saying the things he does? He knows you are doing well and have moved on to the point that you are comfortable w/your new life. He also may very well know you are dating....This man may be afraid of losing you and is telling you things that he thinks you want to hear.

Until he's earned his right to be a partner w/you, I would step back and allow him to continue his therapy and prove himself to you. Do not take him back w/o him doing the necessary work to heal. Many times, they come back and they've not done the work and out the door they go a second time and it is even more painful the second time around.

Live your life to the fullest. If it is meant to be, he will find a way to return to you as a mature and wiser man.

Sit quietly, the answers will reveal themselves when you least expect them to.
The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.