Do you often feel sad when you are in love? Do you often worry about breaking up? Is he often dissatisfied with you? Do you often say your faults? Will he deliberately ignore you? Does it make you feel insecure? Do you talk about your ex often? Will it trample on your dignity? Do you think he loves you more or loves himself more? Do you cry often? Will you suffer from insomnia? Thirty ways to identify a bad person, teach you how to stop liking someone and welcome the rebirth of your heart. From a psychological perspective, this book teaches you how to identify evil lovers with toxic personalities, detailing how these people use language, psychological suggestion, and even sex to turn you into a pawn on their game board; they erode your personality, make you gradually lose your subjectivity, and use ambiguity to punish you for being "out of control"; and later, because you gradually become emotionally unstable, he feels worried and scared, and breaks up with you in a gorgeous way.