Ivy told her stepsister Karlee that things weren't really working out between her and her boyfriend Xander, so she was going to break up with him that night. Karlee, being such a sweet girl, decided to give her sister a hand in letting him down gently, so she thought to bake him a break-up pie! Xander was surprised to find things weren't going as well as he'd thought, and that Ivy was actually attracted to her stepsis - but so long as he could join in on the fun, he didn't mind getting dumped! Very progressive. I wish all breakups ended in threesomes!