The One With Rachel's Crush Ross and Chandler go to see Kathy perform in a play, but they didn't expect to see her physically "perform." A jealous Chandler begins to wonder if there's something going on off stage between Kathy and her handsome co-star. When Joey theorizes that poor chemistry on stage translates to major chemistry off stage, Chandler accuses Kathy of cheating, even though he can't really prove anything. When everyone laughs at Chandler for listening to Joey' s theory, he goes to Kathy's apartment to make up with her, only to find her in bed with her costar. She explains that nothing was going on, but since Chandler dumped her, she figured what the hell. Meanwhile, Rachel wants to desperately date a client at work. The guys tell her to entice him with something he can't refuse ... like tickets to a basketball game. When she tells him she has tickets, the client accepts them and takes his nephew instead of Rachel.