Sorry to hear midget that you were let down.

The thing is, some people have no idea how to deal with serious mental problems, such as depression. As a reflex reaction, they dismiss/reject the person with the problem. Perhaps these problems become to personal, go about things they don't want to think about. It has to do with some insecurity I think.

This is why I never talk about serious problems with my friends. I do belief they'll probably respond well, but I just don't want to risk it.

Better to tell a therapist or the people here on the forum what's going on.

And btw, I think you can call that friend after a while (some weeks) and tell them you just had a rough day/time. I think you can make it up again.

You say you don't know what triggered your depression. That's always annoying when you don't know why it happens. Perhaps you need to do some more soul searching to find the reasons for why you are unhappy (sometimes)...

Take care, and feel free to say anything you want here. That's what this place is for.