I Do... Until I Don't is a 2017 American comedy film written and directed by Lake Bell. The film stars Bell, Ed Helms, Mary Steenburgen, Paul Reiser, Amber Heard, Dolly Wells, and Wyatt Cenac. The film was released on September 1, 2017, by The Film Arcade.

Lake Siegel Bell is an American actress, screenwriter, and director. She has appeared in various television series, including Boston Legal (2004–2006), Surface (2005–2006), How to Make It in America (2010–2011), Childrens Hospital (2008–2016), and Bless This Mess (2019–2020) and in films including Over Her Dead Body (2008), What Happens in Vegas (2008), It's Complicated (2009), No Strings Attached (2011), Million Dollar Arm (2014), No Escape (2015), Man Up (2015), The Secret Life of Pets (2016), Shot Caller (2017), Home Again (2017), The Secret Life of Pets 2 (2019), and Black Panther: Wakanda Forever (2022).