why is my friend trying to be like me?

[Josh]

It might sound stupid but its the truth. Im 13 shes just turned 14 the other day. Im in 8 grade we have been friends since 6 grade the first day of 6 grade. I liked her at first she was different from other people. Then in 8 grade she would ask me my fav. bands and i would answer: Asking alexandria, BVB, Botdf, three day grace, green day, 21 guns, and ect... then she would listen to the same music to me... i got really mad and mostly beacause she gets accepted better than me... everyone likes her better i dont know why. Them she would look through my Phone and have the same apps. I told her I would dye my hair and she went and dyed it! i tell her i go to hottopic to but clothes she goes buy clothes from there! I just cant stand it anymore... she says she looks up to me... but shes being like me. I started cutting myself i have too many problems at home, she starts cutting for no reason! I stoped eating so i could be skinny beacuse my OWN FAMILY WOULD MAKES FUN OF ME ): i was 110Lbs and now im 100lbs... then she stoped eating. I read a book she reads it.
Can anyone tell me what to do please? I reached my limit... i cant stand it anymore... ]: I just cant...
Also im a girl but my nickname is josh my real name is jocelyn... im a tomboy, and then my "friend" got ride of the make up she had and pink... Ive had many people over the years trying to copy me but this is over the limit... help anyone?

P.s if you have twitter Follow me Ill follow you (:
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sorry jocelyn Pasillas.