Deception damages a relationship. The act of lying is much more damaging than the things that are being lied about, because lying undermines the knowing of one another and the connection itself. The point at which deception enters is the point at which relatedness ends. As someone once told me about his fiancée, “I think she has told me everything, and then I find out one more thing that she fudged on.” Ultimately, he called off their marriage because his trust had been seriously eroded.