What should i do about these mean people?

so i moved to a town 3 years ago. I was home schooled and now I go to school in the towns comunity school. im in the 7th grade and im fun, out going, and funny. These girls in my class act nice to my face but then behind my back they say that im anoying ade that they wish i never meved here. they have told my friends that they are stupid for hanging out with me. I constantly hear from my friends that ANOTHER rumor about me has been spread. These girls act nice and they talk to me on the internet but around their other friends they are total snots. im willing to forgive them but they think that im not cool enough to hang aou with them. I was informed today by some one who i talk to but is not my bff that so many girls laugh at me behind my back because i think they are my friends. I dont want to go to school anymore! What should i do!?!?!?? thanks for the help!!