Ok, so he has PTSD then? Ugh, that's another challenge all in itself that HE needs to get help for that you cannot fix or change. Also, his choice to self medicate through the alcohol is bad for him as well as for you. Honestly, from all you have been sharing and what is coming out more and more about this relationship along with this person's unhealthy life issues, it's adviseable that you break off this relationship. You are only going to continue to get hurt and it's going to continue to be unhealthy for you.