Ep 16. Dumbbell Indemnity

Homer joins a gym to impress Marge, but instead befriends Comic Book Guy. When the two of them discover that Marge has been spending a lot of time at the gym to see a sexy instructor named Lucius, Homer becomes jealous and decides to get revenge on his wife by staging a fake affair with his coworker, Mindy Simmons. However, things get out of control when Mindy actually falls in love with Homer and they end up running away together. Meanwhile, Marge starts to regret her infatuation with Lucius and realizes that Homer truly loves her. The episode is a parody of the classic film noir, "Double Indemnity."