Smallville :

Clark encounters a surprising new foe when Abigail Fine, a shy high school girl, undergoes plastic surgery to enhance her looks and boost her popularity. But she discovers that her kryptonite-enhanced beauty causes harm to anyone she kisses and Abigail decides her next victim will be Lana.

Meanwhile, Lana's boyfriend, Jason Teague, having followed her to Smallville, takes a position as the assistant football coach as Jason and Lana continue to hide their relationship from Clark.