It really doesn't matter who left and who is heartbroken after a breakup, because, usually, both people suffer. Of course, it's much harder for people who are left to cope with it, because they didn't want it to happen. All kinds of questions can pop up in their head. For example, "Was I not good enough?" "Am I not pretty at all?". That might ruin their self-confidence and desire to interact with new people. If you are in this situation, I am really sorry to hear that, but I am here to help you. When you are angry and sad, and when you feel like you're not good enough because a guy or a girl left you, it's time to show him or her what they lost. I'm here to teach you how to make your ex regret leaving you for good.