Im only 17 so I i've been in and out of relationships so often its absurd my only advice to you would that this break-up only means that he is not the "proverbial one" for you. My suggestion is too keep to yourself for awhile stay around alot of friends and family becuase im sure they'll help you through this, I wish the best of luck to you, and rememeber the one for you is out there, but don't go rushing out to find him, in time he'll find you and worship the ground you walk on..
" This too shall pass"