THEY IMITATE YOU
First on our list is the imitator. Has your friend ever gone and bought the exact same thing you have without even telling you first? There's a difference between a really close friend sharing similar tastes to you and a friend that is clearly copying your every move. If they always seem to want to dress, talk, or act like you, then there may be a problem. If you feel like you can't do one thing different without your friend doing it too, then they may wish to be like you. Don't trust friends who determine their own identity by stealing yours.