His behavior does sound strange, something must have happened.
What you can do right now is focus on YOU. D is a long process even if he wants to push it. Don't let it get to you. Hang in there! I'll keep following your story.
Me: 30 W: 28 T 8, M 6 S: 7-27-2007 W filed (again) 3-2011 Served 8-2011 Responded, now dark "I have decided to stick with love. Hate is too great a burden to bear" MLK