Oh crikey I'm not sure how I would cope with that, sounds like he has a lot of issues regarding gender roles. I know a lot of that can stem from not being able to trust anyone though, PTSD gives sufferers the fear of being able to trust anyone.
Well that's just him doing the standard pushing you away tactic, although I'm refraining from ever mentioning the word relationship with my vet - he can't handle it and that's fine with me. I think him organizing something or doing chores is actually a good sign, I know it's weird but it sounds like that's how he manages his stress so this is a positive ... rather than getting angry and being incapable of looking after themselves. Well maybe when he does mention exes just ignore him, if he continues just leave ... if you don't want to hear it then don't.
He went to rehabilitation as in therapy for PTSD not for addiction. He drinks heavily every once in a while but other than that he's not on any medication or drugs and doesn't drink daily. He's actually on a very good path, he actively seeks help and goes to therapy weekly/daily at the moment and he is extremely healthy in terms of keeping fit - it's the one thing that de-stresses him. So I'm not sure about the moving in being a healthier lifestyle, at his parents he gets looked after and has people around to distract him. I guess we will just have to wait and see how he get's on, I was at his a lot before he went to rehab so I think this time I might need to step back and bit and let him find his feet without me being there constantly.