The Class (2006) - 1x14 - The Class Has to Go to a Stupid Museum

When Palmer overhears a phone conversation between Kat and Benjamin that insinuates that her relationship with Ethan is based solely on sex, she decides they need to practice abstinence and discover what else they have in common.

After Kyle and Ethan spend most of their day listening in on a conversation between Kat and Benjamin, their fun backfires when Palmer overhears it and decides that instead of jumping into bed, she and Ethan need to spend more time together socially by attending museums, going on bike rides and watching films about ancient pottery. Meanwhile, Lina and Richie are stunned when Nicole and Duncan confess that they hooked up a few months back after Ethan's party.