I had a friend that did exactly the same thing. I finally told her I could not see her anymore because of it. I told her she had to do things that she wanted to do and wear clothes that she liked. It didn't matter what she thought I would do or wear. I told her that my personality was not strong enough to support two of us It was very hard for me to do because I do not like hurting people and, she was hurt for awhile. Then she found someone else to leech on. And so the pattern continues.