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 are inherently unsustainable because they fundamentally misunderstand human psychology. The very premise relies on suppressing natural instincts like jealousy and the desire for exclusive, deep connection, leading inevitably to emotional instability and breakdown. How can a relationship truly flourish when its foundational pillars are deliberately weakened?