4.07 The One Where Chandler Crosses the line

Chandler becomes further frustrated when he accidentally sees Kathy coming out of the shower. Joey is late for a date with Kathy because he's on a date with someone else; Chandler and Kathy spend time alone together and they kiss; Chandler feels so guilty that he refurnishes the apartment; Kathy breaks up with Joey, and he suspects there is another man; Chandler admits it was him, causing a rift between himself and Joey. Ross rediscovers his musical "sound," but he isn't really as good as he and Phoebe seem to believe; Phoebe doesn't want to perform because she feels dwarfed by Ross's musical gift.

Additional plotline on the DVD release: Rachel experiments with eating in restaurants alone.