4. Can't Stop This Thing We've Started

Complete story — includes the ending

Lucas has concerns over Derek's pushy behavior. The entire school is talking about Brooke's pregnancy, Rachel thinks she should have an abortion. A ‘Clean Teen’ girl, Shelly, begs Brooke not to have an abortion. Nathan buys a motorcycle despite Haley's reservations, and Rachel poses for Maxim magazine. Nathan tells Deb to choose-the pills or him- and she chooses the pills. Upset, he accidentally crashes his bike. Karen and Whitey reveal to Lucas has that he can play basketball again if he takes his medication and plays only 15 minutes a game. Lucas refuses as it would be too hard to only play part of a game. At Tric, Derek lies to Peyton, saying he heard Lucas tell Brooke if she took him back, he would never talk to her again. Peyton finds Lucas and tells him about the pregnancy and tells him if Brooke is pregnant then it's goodbye, leaving Lucas confused. Brooke learns Shelly had an abortion and she is still traumatized over it. Lucas confronts Peyton about what Derek said and they learn Derek lied to her. Dan continues to struggle with hallucinations and realizes he may still love Karen. Haley tells Lucas she is pregnant. Derek hires a prostitute, who wears Peyton's stolen jacket and a wig. Derek takes off his shirt to reveal a tattoo across his back of Peyton dressed as the angel of death. This episode is named after a song by Bryan Adams. Lupe Fiasco Guest stars