I'm worried about my friend

Ask him why. If the issue can be fixed, help fix it. If not, remind him how devastated everyone he cares about would be. I swear, I'd have offed myself last 年 if I didn't 愛 my family and フレンズ enough to want to keep them from going through it. That, and the knowledge that it would get better. I'm still a teen with less rights than any adult, which I hate. But if I die now, I'll never experience true freedom. I can't visit my friends, but I never will if I'm dead. Life DOES get better, so I'd advise trying to explain that to him. If none of this works, I'm sorry.

talk to him and be there for him

Ask him what's up. If he's not talking about it now, that doesn't mean he will when あなた ask. Tell him you'll only stop asking once he answers. Let him know you'll be there for him, and assure him how upset あなた would be if he committed suicide. I myself have felt suicidal every now and again, and I am only twelve. あなた have to learn to pull yourself through these things, and あなた do.

Good luck with your friend, bro. Tell him I 発言しました hi! :)