My girlfriend broke up with me for a guy that has been using her. how do i get her to go out with me again?

if done everything i could to make her wanna go out with me again. she wants to learn how to snowboard so im thinking of teaching her, but she thinks im amazing at dancing and i drew a picture of her that everyone thinks is amazing but she still dosent like me. we are really close friends and i dont know what to do. and shes blonde and gets really hyper.