you have all the right to be hurt by your friend... she has to understand that you like him and she can really hurt you through this... tell him that just the fact that its your friend and that she knows that you like him really hurts you. And if your depressed about this, then its okay but dont wory about it too much... if he liked her he would have said yes to her. Just be happy your with him.
i agree with yeahitssjanelle... i liked a guy like this before and if that is why he doesn't like you, trust me you dont want to like him anymore. He'll keep hurting you and if he does, hes not worth it.
people dont always admit it, but i bet you there are lots of people that would cry for weeks if you killed yourself. Even when i hear about someone killing themself i wish i could have been there to say i cared. I dont know you, but i care. People do care about you, even when it doesn't seem like it at all. You can talk to me if your ever thinking about it or just need someone to talk to :)