"The Girl Who Invented Kissing" is actually the title of a 2017 American romantic drama film, not a historical or factual reference to the invention of kissing. The movie, written and directed by Tom Sierchio, stars Vincent Piazza, Dash Mihok, and Suki Waterhouse. It tells the story of a nameless, pill-popping drifter girl who steps off a bus and enters a neighborhood bar owned by two middle-aged brothers, leading to changes in their lives. The title is metaphorical rather than literal, and the film explores themes of relationships and human connection rather than the origin of kissing itself.