The advice already given to you is really good, and the links
lostdoll gave are really good and well worth reading. As its been said Suicide is not the way forward, there are so many things you've yet to experience, killing yourself now would be such a waste of a beautiful life. You have to keep on fighting for the things you've yet to see.
Try to keep yourself distracted, you could spam the
F&D Board or try to see how many of the
Big Distraction List you can complete. Otherwise there is the wonderful
RYL Arcade where many an hour can be lost when your determind to beat a high score.
You can beat the urges and get through the summer, I know its hard, but maybe you could try to start seeing your friends again, just a little bit more each time. Try to see if you can keep active so that you dont withdraw too much. Look after yourself hun. There are brighter times ahead worth waiting for.
Aimee xx