I'm not going to say who it is or go into specifics. My friend is a really nice guy, but he has a lot of problems. Like many people, he's had a rough life. He is definitely not unscathed by it, and he suffers through episodes of mental illness. For over a month, he's been symptomatic, and I have not been in contact with him in several weeks. The mental illness makes him a very different person, and the last time he did contact me, he wasn't very nice. I realize it's not how he is deep down, but it's been hard on me nonetheless. I've tried to contact him since then to see if he's okay, but those attempts have been fruitless. I wish I could do something, but it seems truly hopeless.