<human>: Can you provide a brief rundown of the text in within 3 sentences?

"John" and I have been friends for about 4 years. We met in high school because we were in the same after school club. The whole club was close, so we were all good friends. Then, two years ago, everyone went away to college. John and I were the only two to go to the same college. I've stayed close with several of the friends, but john has lost contact with all but me. 

Ever since college, things have gotten worse for John. He's always been very socially awkward and different. Honestly, I wouldn't be surprised if he was somewhere on the high functioning spectrum of the autism spectrum. After leaving high school, John has receded so far into his shell that I'm basically the only person he talks to or spends time with. When we do talk, it's mostly about how miserable he is. He's depressed, hates his job, hates his roommate, is lonely, is struggling in classes, etc etc. I've been offering constructive advice for a while (Can you try to find a different job? Would you want to speak to a school counselor? Are there any organizations that interest you? Why don't you hang out with me and my friends this weekend?) It's all to no avail. He refuses to help himself and comes up with excuses for why he can't do things. I'm at my wit's end. It's incredibly frustrating to listen to him talk about his problems and not try to fix them. He reaches out to me at least several times a week and the conversation always end up on his issues. 

I don't mean to completely under sell John. He is a nice guy, and we both have a sarcastic sense of humor that we get a kick out of. Sometimes we laugh about the old times, and he has some interesting, intelligent things to talk about. But the friendship feels one sided. Granted, I don't have any major issues to talk about, but it's always about his problems. I would feel bad not talking to him about them, or ignoring his attempts to talk, but his constant negativity is draining me. Any help?
<bot>: I'm basically this guy's only friend. He's very unhappy but refuses to try to change his life, and I'm tired of listening to it.