Yep, you are wound up. And it is because of King Pity Party.

Maybe you should discuss some ideas with the counselor on how to get him to stop laying his misery on you. I know that when my W tried the "pity me" stuff that I immediately called her on it and layed it out very clear that she, and she alone, was responsible for her misery and path she chose to take.

Do his mentors/friends Nathan (and Tom?) know you guys are getting divorced? It may be time to get them to tell Dan to layoff on messing with your head.