chunk: Joey offers to pay Patrick to take Kat to the prom so he can take Bianca. Patrick initially refuses, but relents when Joey offers him more money. Kat is still angry with Patrick, but he wins her over by serenading her with the accompaniment of the marching band, and she helps him sneak out of detention. They go on a date which turns romantic, but Kat becomes suspicious and angry when Patrick insists that she go with him to the prom, an event she is adamantly against. Bianca is irritated that Cameron hasn't asked her to the prom, and so accepts Joey's invitation, but Walter won't allow it unless Kat goes too. Kat confesses to Bianca that she dated Joey when they were freshmen and, succumbing to peer pressure, had sex with him. Afterward she regretted it and Joey dumped her, so she vowed to never again do anything just because everyone else was doing it. Bianca insists that she can make her own choices, so Kat agrees to go to the prom with Patrick, and Bianca decides to go with Cameron