Hi Landgon,

I am a Marine and dating a Marine with combat PTSD. He has done some very bad things in his past. Most of it was to survive. He is in complete denied. He says time and time again that he needs help, but doesn't want to be "one of them."
Withdrawing is very common. He might be trying to protect you from it. At least he knows that he has PTSD and is trying to work it out. I know that you probably miss him, but just remember he DOES has issues and he doesn't want to burden you with them. He can function normally working. Most of the time it is when they are alone, getting ready for bed, in the sleep or when flashbacks happen.
People with PTSD can hurt theirself. My boyfriend does it a lot when he is sleeping and doesn't even know it. Sometimes it scares him when we are in bed together. He said that if he ever did anything to me in his sleep he would never forgive his.
During his nightmares and seizures I just try to hold him and whisper that its over and its okay now. He said that makes them end faster. Just be careful because if they feel like they cannot return the feeling of caring they will run.
Its hard it love someone with PTSD. At the same time I can't see myself without when its a normal day.