The Class Has to Go to a Stupid Museum

S1 E14: While talking to Ethan on the telephone, Kat gets distracted when her boyfriend, Benjamin (recurring guest star Trent Ford), walks in, and she forgets to hang up the phone. Ethan, Kyle and Palmer (recurring guest star Jaime King) listen in on Kat and Benjamin's private conversation, during which she reveals that she thinks Ethan and Palmer's relationship is based solely on sex. To Ethan's chagrin, Palmer then insists that she and Ethan not have sex for a while. Meanwhile, Duncan and Nicole individually confide in Richie about their relationship, but they soon find out what a terrible secret keeper he is. Also, Lina gets her leg casts removed and takes a few tentative steps.