The Class
The Class Has To Go To A Stupid Museum (1x14)
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When Ethan, Kyle, and Palmer overhear Kat and Benjamin's conversation about Palmer and Ethan's relationship being based only on sex, Palmer decides that it's time to learn more about her lover and spend some time going to museums and practice abstinence. Meanwhile, when Duncan goes out with an old school friend, Nicole becomes jealous and tells Lina and Richie about sleeping with Duncan after Ethan's party.