Friend trouble!!!!!!!!!!!!!!!!!!!!!?

ok i have this friend, (lets call her jane) So Jane and i were bffs since kindergarten. Then jane started liking other stuff but we promised each other we would still be bffs. anyways everyday after school she would play bball with the populars. so i would wait at the school grounds for her and we would walk home together. (We live by each other) Anyways one day i saw her walking with the populars and i called out her name several times. She looked back but gave me a dirty look. The next day i asked her about it and she said, "I moved on." i was really sa at first, but i made a new bff. anyways i was playing with my new bff and jane comes and says "why arent you hangingout with me anymore? aren't WE bffs?" so now she is spreading rumors and i don't know what to do please help!