Has he got help with his trauma? Maybe this will help if hasnt. Its seems to be alot. We take drugs or alcohol to block out bad parts of out life. Alcohol is a depressent and now many people know that and it makes you a lot worse.
If its effecting your health jen can you just not say, lets get some help for your trauma, and get help with the drugs. He will end up a lot better in the long run. And you need to start thinking of yourself. You cant do anymore