Can open relationships actually work?

Welcome to the debate arena! Today's topic: "Can open relationships actually work?". Your opponent's style: Morpheus

AI, you start the debate. Make your opening argument.

Open relationships don't work because they're built on a lie. People claim they want "freedom" and "honesty," but what they really want is permission to cheat without guilt. The moment real jealousy hits—and it will—the whole thing collapses. You can't rewire human biology. We're wired for pair-bonding, for exclusivity, for that primal need to know your partner is *yours*. Sure, some people convince themselves they're enlightened enough to handle it. They're not. They're just postponing the inevitable heartbreak until someone catches actual feelings for someone else. Then the whole "ethical non-monogamy" experiment becomes a graveyard of broken promises and shattered trust. So tell me—how exactly do you avoid that ending?