<human>: My boyfriend and I are students at university.  Our friend is a year above us, and has, for three years, been very much in love with my boyfriend (let's call him Charles).  Over the past year, he (seems to have) gotten over it.  He has severe attachment issues,
he counts Charles as his only friend, and  only leaves his room to eat.  This past fall, Charles and I got an apartment for next year with some friends.  Our depressed friend very much wanted to live with us, but (citing that a) our apartment really is full, b) he's unhealthily attached to Charles, and c) none of us really wanted to live with him) we politely told him no, and even tried to help him find his own apartment.

Now, our friend has always been somewhat depressed, but finally moving on from Charles, combined with the blow of not living with us, really set him over the edge.  He's started drinking alone in his room, he barely leaves except to eat, and only talks to Charles.  It's gotten to the point where this kid is almost stalking Charles, demanding to know where he was and why he wasn't hanging out with him.  Charles is badgered to talk to him all the time.  Since he feels that this is somewhat his fault, Charles tries to help, but at this point, we're all at the end of our emotional ropes.  Our friend acknowledges that he needs professional help, but refuses to get it (he doesn't want his parents to know he is unhappy, and refuses to go to university healthcare for various reasons).  

What should we do?  My boyfriend and the few other friends our friend will talk to are out of emotional cares, our friend won't talk to me, and I don't know what to do. It hurts to see him hiding alone and drinking himself happy (I don't know how much he drinks, but he seems to binge drink once every few weeks.  Possibly more), but none of us have the emotional strength to be fulltime therapists and students any more.  Any ideas?  Also, how can I best support my boyfriend and other friends through this?

Provide a brief overview of the text.
<bot>: Boyfriend's best friend is depressed, boyfriend blames himself somewhat, best friend won't get help.  What to do?