i had a girlfriend named kim and she broke up with me because i dident have a cell phone and dident talk alot im 12 by the way in 6th grade. by the way she is my eXXgirlfriend -(
If she broke up with you for those reasons then maybe your better off. But if you want some ideas why don't you try writing her a letter. Maybe write little notes and stick them in her locker or in her books as a suprise. Sometimes its hard to talk in person but maybe you can say cute things or let her know you still like her with the letters. Good luck.
one piece of advice, your young bro. try the things that are posted above but if it don't work out...you know u going to find a ton of others man...trust me on that one