I think I may be of some help because I am 16 myself. No matter who it would be, if you know of a suicidal person, they need some help. It's already a great thing that he's able to open up to you and tell you these things now. That makes things go along easier. He might be angry at first, but that won't be him speaking. It seems that you're a supportive parent, that's good too. I know my mother wasn't, and that resulted in me leaving therapy 5 sessions in. But enough about me, your son now. He needs to be in a safe place. Most people are irrational when they're upset. Hospitalization might seem drastic, but you never know. So..that's just my thoughts. It's better he gets help now than find out later. My best wishes with you. So sorry about your son.