ask her straight up why she dumped you... and after she does tell her that even though she doesent want you..you want her and always will..and that no matter what happens, you would do anything...ANYTHING!. to have her back. and if she ignores you look into her eyes and randomly give her a quick kiss on the lips or cheek to show that you mean it and say "IM SORRY". if she has no response, unlikely, then just look really really sad into her eyes and walk away...

guarentied withen a week she will call you and talk to you about what happened that other night and will want you back big time