Idk, just thought friends should be, ya know, friends. If he doesn't want to talk to me he should just say so instead of saying "I'll always be here for you" and not following up on that. I expect people to screw me over, but I don't expect that from the closest person in my life--a person who blatantly said "call me when you're having a rough time and about to do something stupid."
You're right though, he has no obligation to help me, but he should at least not hurt me.