The video discussed cheating and triangulation in abusive and narcissistic relationships, highlighting how these behaviors serve as tools for power play, revenge, and emotional regulation rather than genuine infidelity or pursuit of new relationships. It explored the motivations behind cheating in obsessive, mutually harmful couples—such as restoring power balance, self-harm, and reaffirming negative self-images—and contrasted them with narcissists’ reasons, including seeking control, novelty, and affirming entitlement. The discussion emphasized the destructive cycle these behaviors perpetuate, the instrumentalization of third parties, and the difficulty in breaking free due to trauma bonding and complex emotional dynamics. Cheating, Triangulation in Sick Relationships: Power Play, Revenge, Entitlement