We'll see, I have to some extent hope that the person I've known so long, and who behaved very differently up until this point despite having PTSD most of the time we've known each other is in there somewhere, but of course there is a finite line where you can't keep sticking around and getting nothing back, sometimes have to just accept this "new them" is going to be them from now on.
I understand the anxiety, I have worried, a lot, to my own and her detriment because I don't want to be the guy who abandons her and walks away, that I really did do EVERYTHING reasonably in my power to make things work etc. It's that nagging paranoia we can all get, that we somehow failed, but the fact is, if you tried at all it's more than the majority would have done, so you need to be kinder to yourself. It doesn't feel like it in the moment but, you do come to realise actually, I've gone above and beyond and it's ok to "fail".
It will take time, I've only just come to a realisation that I've tried, a lot, I'm on here, I've read articles, I've listened to her etc, if after all this effort she still wants to cut me out and bin me, it's not "my fault" and I haven't "failed her".
It's the same for you, you've done more than most people ever would, you've tried, and it's ok to fail. You aren't responsible for his recovery, he is, you have tried, but now you have to focus on you, just as much as he has to work on himself too. He's not your responsibility any more, you're always going to be your own responsibility though.
