Wht does this girl copy everything I do?

[Georgia]

Well im not really friends with her, i have never had a convo with her since recently. I have become OBSESSED with YouTube pranksters 'The Janoskians' and Im a massive fan all of a sudden she became a big fan to, I used to like one called Daniel and she liked Daniel, now I like Beau and as soon as I told her I like Beau she said she did, on bbm all of my dps are of the janoskians and every time i change it she has my old one, then my status once was 'woo nearly at 1k followers on twitter' so she asked what my username was and she created an account my username is '@_youradirtypig' and she made one and her username is '@_youradirtypig1' Every one of my tweets she copies, I thought it was just because we both liked the same people and I was cool with that but now she comes into school with her hair the same as mine, her bag is ALMOST the same and she used to listen to pop music like 1D but she listens to my bands like the kooks, greenday I HATE IT ASDFGHJKL