Girl problems continued...?

ok so i went out with this girl in like 5th grade im in 7th now we went out from the begginning to the end of 5th and really liked each other and its been two years and i cant get over her i seriously need help i hate likeing her so much i wanna be free of it please any ways or things i can do to make it stop or any advice of whats happening to me? and i say i hate likeing her because shes moved on completely and i like her so much shes like perfect and i just wanna be free of it its more like a burden i thought love was supposed to be a good thing all i have is heartache i just wanna move on she has to like 4 other guys idk what to do i really like her idk if this is love or im cursed or what but i hate it and seriously need help from u guys i need advice anything!