Dangerous Curves

S20 E5: When the Simpson family takes a road trip to a cabin in the woods, a series of flashbacks depict Homer and Marge's blissful courtship and their early married years. They recall their first encounter with Flanders and Maude twenty years prior at the very same cabins, where Flanders insisted the unmarried Homer and Marge stay in separate rooms. Later, they recall when they each met distracting members of the opposite sex who nearly wooed Homer and Marge away from each other. Bart and Lisa also reflect on happier times from their early childhood. Despite the obstacles and the passing of time, Homer and Marge are able to see the forest for the trees. The episode is based on the classic Audrey Hepburn/Albert Finney film "Two for the Road."