Not long ago I met a friend of a friend, alex at a party. He seemed fine and since the party I have been chatting to him on facebook quite a lot. But he is always depressed about something - he hasn't got a girlffriend, nobody loves him, the usual stuff. At first I felt sympathetic but l have been getting annoyed with him lately. I don't really know him and I have bored of his problems. I have deleted him on facebook but I now feel guilty about it.what if he's seriously depressed?