After I realized that he was not even wanting to try and repair our friendship, and it has been five months, I knew that this was a battle I couldn’t win, ptsd or not.
I know I've been commenting quite a bit on your posts. Maybe I'm totally off the mark and projecting my own life experiences too heavily here, but something about what you've described, plus all the ways he's been somehow keeping you in pursuant mode (and you letting him,) has kind of raised a few flags. Maybe that's just me and my hyper-vigilance :)
I think it's important to know the difference between an explanation for behavior and an excuse. When I first learned about PTSD I took it as an excuse for everything under the sun. After coming on here and learning how much they actually DO have control over, I changed my tune dramatically. Now I know that I can explain most of his behavior, but some things I refuse to excuse because of it.
Maybe he's a full-blown jerk with PTSD. Maybe he has jerkish tendencies. Maybe he's none of that, but is very symptomatic. Either way, you're the pursuer, he's the avoidant. Avoidants always have the control in relationships. And something, I don't know what, is telling me he doesn't mind having all the control here. I'm going to take a stab in the dark and say it's maybe the way he 1. blamed you for the breakup entirely, 2. avoids all clarifying, eye-level talk (or reacting to it by blaming you for more and other things,) and 3. soaks up your support and kindness and reinforces that behavior by giving you a reaction. Something about that sounds a bit inconsistent to me.
Anyway, I don't want to get ahead of myself here or step out of line. Just make sure you protect yourself and focus on your own feelings of guilt, which, I strongly believe, is what is keeping you hooked in this matter, but will fade sooner than you think with some distance and clarity.
PS: your posts are helpful to me also because I'm always on the lookout for where PTSD ends and jerkdom starts. So I've been mulling over your situation a bit...