You are doing a great job. He feels safe talking to you and may not want you to make a lot of comments over what he is saying. Continue to listen and if you feel the need to say something, just say "I'm sorry that happened".
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.
