Welcome to HW!
Kitt is right (as usual
). Breaking up is almost never easy. And hé, your reasons to be depressed are just as valid as someone who lost his or her entire life in an instant, or someone who, well, hurt his toe. It is different for everybody, so please don't judge your situation.
For now, just take little steps at a time. Trying to run while you need to learn to walk will only make you fall. True friends don't give up on you, but you might have given up on them. Maybe you could call some, there reactions might surprise you!
And Horserider, there are so many wonderful members here, it might help a bit if you stick around and tell your mind. Some things you just don't want to say, but you can here. No one will judge you for it. I have some secrets myself as well, but a couple of members here know them. Though it ain't much, it did help me a lot.