Make your ex want you back, but then reject her when she wants to reconnect. One of the most effective methods to exact revenge on a cheating girlfriend is to demonstrate to her that you've already moved on with a lady who is more gorgeous than she is. This has a twofold effect on her. First, it makes her feel bad about herself and second, it makes you look good by comparison. If you really want to get back at your girlfriend for cheating on you, then show her that you have other options by dating other people. If you can find other women to date instead, then this will make her feel insecure about herself and this will drive her crazy enough to break up with her new boyfriend or girlfriend. The best way to get back at your girlfriend for cheating on you is not to forgive her. It's very important that you don't forgive her for what she did. This will only encourage her to do it again in the future. Instead, focus on the fact that she's gone down in flames twice and this will make you look strong. Let her know that you're too good for her anyway and there's no point in trying to change your mind about that. This will put an end to any future actions on her part and will also teach her a valuable lesson about trusting people.