The melody comes from the love theme for Romeo and Juliet, but for many British listeners it is inseparable from Our Tune, the BBC Radio 1 segment that paired it with heartfelt letters and dedications. Hearing it over those stories turned a classical film theme into a cultural cue for romance and nostalgia. Clips shared online now reuse that association, often ironically as well as sincerely, because the tune immediately signals a tender or emotional moment without needing any explanation.