It's normal to be sad after a relationship breaks up and you'd be weird if it didn't happen and there ain't many ways of getting over it, except what someone said, work hard, ride hard, play music loud, will make you feel happy/happier. Just speak to her normal, or be abit harsh, then if she IS worth the hasstle, she'll come back, if she ain't then she'll slip away and you'll forget her but a memory. Good luck, hard times.