Mare,
I'm at a loss for words! You have some hard roads ahead of you regardless of how you choose to handel it. I have had some 1st hand experience with PTSD my sisters former husband was a Vietnam Vet. I loved him very much but never understood him. Ofcourse i never had to live with him on a daily basis, but I do know some of the crasy (and I do mean crasy) things they do. He is her former husband because he commited suicide, he just couldnt hack it any more. My Sis was 3 months pregnant with their only child! I have seen or heard of to many such relationships that end in sadness. I will hope yours eventually has a happier ending.
We are all here for you!

Tempest