How do you get revenge on ex girlfriend?

Pretend to be her friend! Sooner or later she will confess out a secret or something she HATES! If she tells you a secret, you tell EVERYONE. If she tells you something she hates, then do it! It would drive her insane! Trust me! I am a girl and I would hate for one of those things to happen. These efforts will also help you become an even more toxic personality in all your relationships.