Hello Summerhex: I probably don't really have any useful advice for you here. But I saw that no one had yet replied to your post. So I thought I would. I'm not that knowledgeable with regard to mental health disorders. So I really can't comment with regard to what's going on with your bf. From what you wrote regarding your bf's past, it sounds as though he's had some disturbing experiences. So certainly, I would think, PTSD would be a possibility. But, really, mental health diagnosis is for professionals. I tend to think that we only confuse ourselves more when we try to speculate with regard to what our own, or someone else's, diagnosis might be.

I have written this numerous times before here on PC. I used to know a guy who was fond of saying: "If you want to know which way the bullet is going, look down the barrel of the gun." If you re-read what you've written here, you'll see what you may well be in for if you stay with this man. Of course, the reality is there's no way to know for certain. And that's the dilemma. You didn't mention if your bf is receiving any kind of mental health services. I would personally think this would be important given his background. So, if he's not, that may suggest something with regard to the likelihood that things are going to change significantly over time.

It sounds as though, at the moment your bf is pretty-much preoccupied with his training. I presume "mma" refers to mixed martial arts? If that's the case, then I presume this is not simply a one-time thing he's training for such as a marathon. It's something he's going to be pursuing for some time to come... which suggests to me that he's likely to be near completely focused on training (& fighting?) for some time to come. That may mean his focus is not likely to change in the near future either. At some point you are simply going to have to decide how much of this you can tolerate & for how long. Only you know the answer to that question. I wish you well...