Romantic background cues like this one became a staple of online video editing because a few seconds of piano and strings can explain an entire relationship without any dialogue. Short romantic clips are shared on soundboards for quick use in fan edits, wedding videos, Valentine posts and parody scenes where the joke is how instantly sappy the mood becomes. The sound keeps circulating because it works both sincerely for real love stories and ironically for pets, food or unlikely couples edited to look deeply in love.