Break up?

My so (boyfriend of 1 year) does not try to contact me. We barely speak.. And we don't hangout anymore. And when we do, it's always at night and at his house. I know he isn't cheating. The problem is, he's depressed. 
But I can't help if he doesn't talk to me. He goes days without contacting me. I don't know what to do. And don't say "try talking with him". I have. He's told me he would contact me and hangout with me more. He won't. I don't know what to do besides just leave him for good. Anything else I should try? Maybe he just doesn't like me anymore.