<human>: Give me a shortened version of the text

Forgot to add that I'm a female!

My 22 year old boyfriend of four years was abused mentally and physically as a very young child. I'm not sure to the extent, but what he has told me makes me sick. His father left his mother when my boyfriend was a baby, denied that he was the father, and died when my boyfriend was about 3. His mother was a drug addict and he lived in disgusting conditions until the state took him and put him into the system. The system didn't work and he ended up with foster parents who took him for a check, mentally abused him, institutionalized and medicated him, and denied him a loving home. The parents he was eventually adopted by divorced a few months after he was adopted and his adoptive father used him as a workhorse, then put him on the streets when he was 16. 

He came to me [21] last night and told me he's extremely unhappy and his past is still haunting him after four relatively happy years together. He's struggled with drugs and alcohol and he's been in and out of a program. He has no health insurance and can't afford to see a therapist of some kind. His unhealthy mental state and self-medicating have caused issues in our relationships. He has trouble trusting coworkers and friends. He thinks the world is against him. 

It hurts me deeply that he's still hurting, but I honestly don't know what to do. I don't really want to know everything he has to tell me and I think he needs outside help. I'm at a loss because I feel like I've helped him all I possibly can. Does anyone have any advice regard how I can help or what he can do or anything of the sort?
<bot>: My boyfriend has a shitty past and I don't know how to help him (or help him help himself) be happy.