Season 3: Episode 44: My Boyfriend's Back
Just as Zack and Stacey are getting close, Stacey's boyfriend comes for a visit, and Zack is heartbroken. Meanwhile, Jessie tries to prove to Slater that she's as good as any man, so she enters an ATV race. Jessie's not the only person trying to prove something. Zack struggles to beat Stacy's boyfriend in anything, so he's constantly making himself look like a fool in front of Stacey.