Is she being real?

I have this friend who iz like my bff! she iz amazing but latley she iz getting so annoying! I mean she went to a dance w/ a junior and now she iz like in love w/ herself and thinkz shez better than me and all her other friends! she never listenz to me either and when guyz like me she doesnt even seem happy for me! I mean im like ___shut up! I really am getting tired of her and when me and my other friend were talking we pretended to get mad at each other to see what she would do and when we told her things we hated bout the other one she stabbed us in the back! (not littelry) she iz so 2 faced and just turns around and talks behind your back and she iz nice but sometimes can get mean and jelous and she tries to make me jelous of her and im like “I have nothing to be jealous of” she iz really starting to shake thingz up in my small town so im sending out an s.o.s to the world and I hope that some one gets my message in the computer! lol I love her to death but I don’t know what to do!