Hi. Please take him to a Consultant's office. 

This seems to be PTSD which requires immediate attention.

He is having sucidal thoughts. So consult a psychiatrist ASAP. Do not wait for opinions.

Hi, I know you are worried about your friend. He has been depressed ever since his girlfriend got married to another guy three years ago. He has not gotten over her and he still thinks about her. To get help you can consult a psychiatrist and explain about your friends condition. Your friend can also consult a psychologist. Do not worry with the right kind of help everything will be fine.

Hey thanks for reaching out. I understand that your friend is really struggling to get over and move on from his past relationship. He needs to seek professional help. You my friend are already being supportive of him and that’s all you can do. Pls suggest and push him to seek personal guidance from a professional. Going through a heartbreak is one of the most devastating experiences for anyone and he is unable to accept this loss of his love interest. It’s not going to be easy but we need to collaboratively help him see what his life is worth. And that is definitely more than any relationship no matter how significant it is for someone.

Hello dear I can understand what your friend might be going through and that you cannot see your friend in this state. It makes you sad. Your friend is having suicidal thoughts and his life as well as will to live is getting hampered. I know that you might be feeling like you can try and help him. I think you can do it and it is not late. Ask him to consult a Psychiatrist or a Psychologist ASAP. You can also contact me. I am a Psychologist and a Counsellor. I can help your friend with his recovery and also assist him to go further towards his other treatment if needed.

I appreciate your concern to support your friend. Help him in a better way by Seeking a pro