I need help. My aspie friend has been domestically abused (physical+mental) ever since he was a kid. This led to clinical depression and suicidal tendencies. He has been good at suppressing trauma, but his recent heartbreak is tearing him down. He confessed and was rejected by a girl he has a massive crush on.

His Asperger's is definitely causing an obsession over her. He is repeatedly traumatized each time they talk because he is reminded of the rejection, yet he keeps going back to her because they are friends. I put up the possibility of breaking of the friendship because it will keep him from relapsing often. Taking away a relationship is a big sacrifice however.

What can I do as a friend to help other than be by his side? I feel as though I am not doing enough, but I also don't know what to do.