Joseph,
sometimes it´s healthy, and perhaps even necessary, to try to distance yourself, emotionally as well as geographically, from the ptsd-sufferer. At times it´s difficult to maintain a "sober" outlook, living with someone who is unwell. This sounds very difficult, and no doubt, it is! When it´s as negatively overwhelming as you describe it, it´s difficult to have a healthy perspective and see "the whole thing" from "the outside", so to speak. For me and my husband a separation was unavoidable-we were like cat and dog, we couldn´t talk about anything without ending up in an argument and things just spiralled out of hand. Now, a couple of months later things have calmed down considerably. We live in separate houses, but spend most of the days together and get on really well these day, in fact better than ever, I feel. He has found a tiny bit of peace getting away from the bad stress we experienced together (and which obviously made his symptoms grow even worse), and has so become a little more stable, which obviously is crucial for his healing. On my own behalf, I have finally managed to get the "right" perspective on things with ptsd I think, and am now beginning to feel that I am able to support him in a competely different way than I possibly could have before. Reading stuff in this Forum has made a huge difference for my understanding and I now feel that there is hope for a future together for me ad my husband!
Best of luck to you!