s03e13 - "Making Whoopee" - (Part 1 of 2)

Original Air Date: Monday February 13, 1989

Arthur doesn't like his father's new girlfriend, and he and Yick plot to break them up. Arthur is frustrated when his attempts don't work, and is shocked to see that his father's girlfriend had spent the night. At the school open house, Arthur is furious when his father brings his girlfriend. Arthur feels bad when his father later tells him that he broke up with her. Melanie becomes jealous when she sees that Alison has taken an interest in Snake.