Five of the most hurtful events in our intimate relationships are criticism, active disassociation, passive disassociation, infidelity, and deception. Infidelity, in particular, can create intense emotional distress, including depression, anxiety, loss of self-esteem, and trauma. Infidelity is essentially a behavior by one partner that breaks a contract that two people have with each other. One of the most painful questions that individuals can ruminate over is, “Why did they cheat?” There are many reasons and theories as to why individuals cheat, such as attachment issues, personality traits of the cheater, or a societal adaptation for unmet needs.