why'd you steal her guy if your that willing to dump him anyway?
tell him straight up that you have no intention of ever kissing him again.
now buy your friend 5 presents. make sure they are small in size, not in meaning.
now attach "I'm sorry" and "please forgive me" and "I messed up" and "I chose you
over him" and other stuff like that to them.
put them on her desk before class. if possible sneak them in her back pack. her door
step. have her mom put one on her bed for you. give the last one to her in person and
tell her in detail how and when you messed up, what a dufus you were for doing it,
and how much you just want to be friends again.