According to Christinaity- will suicide be forgiven by God?

The answer is simple, think about it logically. You're friend decided on his own, to take his life, yes it's a very selfish act, his soul will be bound to the consequences of this action. If he would have really believed in Jesus, he would have known this. I mean i don't doubt his faith, but taking hes own life is a serious issue. If we was not insane and he knew what he was doing, than yes i'm afraid you are right to be concerned about him. The only thing you can do is pray, God bless you. You are a wise person you will understand, that what he did wasn't right.