Life is hard enough without having a negative person always around putting down you and everyone else. You want a friend that can pick you up and make you feel better about yourself and situations.
Additionally, relationships can never be one-sided. You need someone that cares as much about what you have to say as you care about them.
A manipulator is a master at the game. It may be exceedingly difficult for you to identify their character from your first meeting.
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