The word “betrayal” is generally understood to mean “rebellion against the rule”, or to betray or betray someone. To the state, the traitor is referred to as the traitor. And the “betrayal” I want to talk about today is just between people. Why do betrayers betray? What kind of despicable behavior? The psychology and mood of the betrayed. Is it the primitive bad nature of human beings or the choice that people often have to make when they have to? What is the struggle before choosing to betray? Or take it for granted?