Most Helpful Guy
Please call this number immediately: 1 (800) 273-8255
It is the national suicide prevention hotline. Even if you're not the one experiencing suicidal thoughts, they will be able to put you in touch with resources better than anyone here can. Seriously. If you want to help save a life and you genuinely believe this person is capable and considering ending their life, call the number. I realize that can be scary, but they're not going to come for you and institutionalize your friend. They will help you and in turn, help him.
Most Helpful Girl
you're a good friend for caring. constantly be there for him however you can right now. he needs to know he's worth a lot.