Omg boy problems !!!! helpp?

so i have liked this guy for 5 years and we r bffs !!! and i introduced him to my NEW bff that i made in 6th grade .... she decided she likes him .... and me and her ALWAYS fought about it . so since i live near him we would makeout and hug and flirt at the park ... but if she ever came he decided he liked her becuz she has .... so i thought he rely liked me for a while and me and my new friend got into a fight and shes now going out with him. she is a backstabber but then when shes out of the question he loves me ... i rely think i love him and ive tryed getting over him for SOO long .... how do i get over him or get her back or get him to only like ME??? THANKS ILY