<human>: Can you condense the text into three sentences or less?

My boyfriend of a few years now is going through a really tough time. He's had depression for a long while, and is on medication to help. He has been drinking a lot as well. The last year he's been in and out of friend groups. The first one, they partied a lot, good people, but had a falling out and he was directly hurt by it. They recently made amends but are not in each others company. Then, he made a few friends and would hang out with them and drink a lot, and now they're talking behind his back and are also not wanting to be around him. And now, his friends of 5 years and even longer have all opted out of his life and said it was because of his drinking. He's tried contacting them but figures if there not trying, what's the point? 
My boyfriend is a wonderful guy. We have had our dark moments but after getting passed them, we've been very happy and successful together. However, I do think his drinking is getting out of hand and I try to explain to him this is why many of people have steered away. However, even if this is true, his friends hardly made the effort to get him on a clean and supportive path, which even I expected of them.
<bot>: my boyfriend's friend groups have been coming and going in the last year, and I am not sure what in the world I can do to help him.