One of my closest friends became my roommate in college this past fall, we are sophomores in college now, and we got along very well. She did seem quite competitive before we became roommates though. I didn't really read into it that much until the school year started. The previous year she had copied some of what I wore and then tried to broadcast it as her own idea. Actually, come to think of it now, she did this quite frequently my freshman year of college. She bought every pair of shorts I owned, and every color pair of pants I owned. That was the extent of it during my freshman year though, I didn't really see her as often as I did this past semester. This year she had decided to buy or consider buying almost every clothing item of mine, and then try to claim it as her own idea. She also lacked a lot of empathy when I confided in her. She would diminish my personal issues and then begin to talk about the severity of her issues. I was so kind to her, I let her borrow my car to drive to pick up packages across campus, I drove her around like a chauffeur almost everywhere.  She had successfully manipulated my friendship with one of my dearest friends and then managed to take my place in the friendship. She had come to me concerned for my well being, saying I have drinking issues, convincing me that I had severe things that needed to be worked on (i ended up going to therapy almost twice a week to fix these "issues"). Now she is looking to buy the newest model car of mine. She follows accounts on social media about surfing, skimboarding, snowboarding, the car company I drive. I feel myself losing my own identity. I feel like she is trying to become me and then wipe me off the map. People began mistaking her for me and she expressed such disgust about it as if she could never be mistaken for little old me, like it was an insult of some sort; meanwhile, she is buying all my clothes and growing her hair out to the same length as mine. she laughs at my interests and makes fun of my quirks, but I find her mimicking the phrases and mannerisms I use in daily conversation. at this point, I am scared to return back to campus. I have applied for a single dorm room, in hopes to preserve any form of self-identity I have left. I have gone NC with her since last week. I realized there is no mature way to cut someone as toxic as this out of my life.