My friend is going through recent break up as his girlfriend is getting married to someone else and this has impacted on him in a very bad way and he is not ready to accept this. He is very taking help of alcohol and weeds. Day and night he is searching for that groom whom his girlfriend is set to marriage. And he randomly showing any  photo of any guy and saying that he is the one who his gf is getting married and now he wants to talk to that person. Last week only he had met his gf and created the whole scene in the public place and since then his gf is not answering his call and he is saying that he will take revenge by break the engagement ceremony after the engagement and all . One of the worst thing is that no other friends of him is helping him out in proper way. He is very alone now. I can't leave him alone like this. He is in Bangalore for his work. All he want from his gf is that she should talk to him nicely Before moving out of his life. what should I do.please help me