A girl's playing games with me?

As i said in my last question that theres a girl who says she likes me well she told her best mate if she likes me or not and that she dont want me to know if she likes me or not, anyway her best mate told me what she said and she said she likes me a little bit but not like she did before we fell out and this is really annoying me and I feel like shes deliberately playing games with me and I know this sounds abit over the top but im getting that pis*ed off that i dont really want to go to school anymore just so i dont have to deal with her anymore can anyone give me advice on how to deal with this preferably can i have a girl to tell me how to deal with it please thanks