@Fisherman listening to him tell of his pain is healing for him.
Talking to him about suicide will not make him suicidal.
Often times anger is the root of depression.
The bottom line is that those closest to him can reach out and be used by God to alter the course of his life. Prayer opens a door for the King to enter. Healing begins when a concerned believer who feels out of his or her depth, reaches out to weep with those who weep.