There is a difference between a romantic comedy that is charming and one that makes the temperature in the room seem to rise. 10 One Night Only (2026)Will Gluck's One Night Only probably will not go down as his most universally loved romantic comedy. That kind of theatrical run is exceptionally difficult for a modern romantic comedy to pull off. That ongoing argument gives When Harry Met Sally... a sexual charge long before anything actually happens between them. More than 90 years later, its central lesson still applies: the hottest romantic comedy is often the one that knows exactly how long to make its characters wait.