In this novel, betrayal is not necessarily a bad thing. On the contrary, betrayal is defined as "going off into the unknown" and frequently equated with an individual's rebellion against totalitarian power. In other words, betrayal is the path to freedom. Through Sabina, one of the novel's four main characters, the narrator examines the attraction to and the consequences of betrayal. He concludes that one betrayal leads to subsequent betrayals, and explores what lies at the end of this road.
Every character in The Unbearable Lightness of Being harbors a self-destructive impulse that takes its form in self-betrayal.
Every character in The Unbearable Lightness of Being fundamentally betrays the person he or she loves.