Ok, so we have the miscommunication worked out. Let's get this back on topic for Prudy. She was asking for coping skills to help her be supportive of her fiance and I believe take care of herself.
Prudy, I am a sufferer and have been a supporter of a close friend with PTSD. I also believe my mother and brother suffer from it. They are undiagnosed but given we all lived thru hell together I think it's a pretty safe assumption.
The first thing you need to do is take care of yourself. We suffereres can be pretty manipulative, even when we don't mean to be. You need to set up boundaries, decide what you will put up with and what you won't. You haven't given any specifics here yet, but if you do we can all be more specific as well. Once you have decided what you're boundaries are you need to sit down with your fiance and explain them. It's important that you maintain those boundaries, if they are crossed there are set consequences....i.e "If you start yelling at me I am going to another room or for a walk", "If you hit me, we are done" etc. It is very important that you keep your boundaries in place and if he crosses them follow thru with the consequence. It could be that your boundaries at some point will need to be modified for whatever reason, either stricter or looser, if so sit down and discuss them with your fiance. I have found that in sticking by my boundaries, the sufferers in my life have eventually learned that I mean it. They still try to cross them at times, but far less frequently than before.
Having PTSD is not an excuse for bad or abusive behavior. You do not and should not accept it.
I am sorry we got off track....we really do want to support you ;o)