I have a friend.when he was 16 he met a girl and fall in love.After 5 years she married another person.now he became 25.he can't escape from the old memories and adicted to alcohol.He don't want to continue his life.This is the problem.How can I help him?

Does he want help? Does he understand/realize how far down he is? Little can be done if he isn't wanting to put in the effort to help himself.

Is there anyone he might listen to about what he is doing to his life?

If he is making threats about ending his life, could his family have him committed to a hospital for psychiatric observation? It won't do any good if he doesn't want to get help, but it could be concrete evidence that he is close to 'rock bottom'.

Honestly, I understand that he is your friend and that you want to help him. I get that...

However, like anyone that's going through depression/addiction... no one can help them unless they want help themselves. You can be there for him, listen to him, but I understand that among the closest of friends, that gets old quick. You can suggest to him to see a psych or even a family doctor, but unless he's willing to go himself, it will have very little effect.

You let him hit his bottom, and when he asks for your help, point him to AA.

I have a friend.when he was 16 he met a girl and fall in love.After 5 years she married another person.now he became 25.he can't escape from the old memories and adicted to alcohol.He don't want to continue his life.This is the problem.How can i help him?

There is seldom a clear cause-effect relationship underpinning addictive or other maladaptive behaviors. I would imagine that there are multiple variables operating here.

However, along the lines already mentioned, you can take the additional step of exposing your friend to helpful information. You might obtain some AA literature and provide it to him. Such actions tend to provide the message that "there's a problem here > the problem is > here's what you can do about it." Nothing magical, seldom a quick response, but can't hurt.