The Season 1 finale of Shifting Gears gave us a pretty definitive, and emotional, turning point for Riley (Kat Dennings) as she finally decided to divorce her ex-husband, Jimmy (Lucas Neff). While the sitcom has largely focused on Riley navigating life as a single mother after moving into her father Matt’s (Tim Allen) house, her relationship with Jimmy has been a major source of tension throughout the season and, despite his attempts to win her back, Riley ultimately realized she needed to move on. But according to Dennings, the decision to have Riley and Jimmy officially separate wasn’t an easy one behind the scenes.