Lily in Love (alternative English title: Playing for Keeps, Hungarian title: Játszani kell) is a 1984 Hungarian-American co-production in English starring Christopher Plummer, Maggie Smith and Elke Sommer and directed by Károly Makk. The film is the third cinematic adaptation of Ferenc Molnár's play about comedic deception and romance Testőr after The Guardsman (1931) and The Chocolate Soldier (1941).