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 fundamental lie: that jealousy is just insecurity we can rationalize away. It's not. Jealousy is a biological signal that something you value is being compromised. You can't logic your way past evolution. Most people in open relationships are either deluding themselves about their actual feelings or they've settled for shallow connection instead of real intimacy. The couples who claim success are the exception that proves the rule, and they usually reframe "success" as "we haven't exploded yet." That's not a relationship model. That's damage control dressed up as philosophy. Your turn. What's your defense?