Her: Cordelia (Charisma Carpenter) was your typical popular cheerleader at a high school located on a hellmouth. She's shallow, and when we first meet her, she's being pretty cruel to geeky Willow. Him: Willow's BFF, Xander (Nicholas Brendon), was based on series creator Joss Whedon. He's a nerd with an unrequited crush on Buffy, so basically, he's got sidekick written all over him. The story: Cordelia and Xander try to keep their relationship quiet, but when word gets out about this odd couple, Cordelia's popular friends kick her out of the inner circle. He casts a love spell to fix things, and despite the fact that it backfires spectacularly, she's charmed by his efforts. Unfortunately, when he hooks up with Willow, she can't forgive his transgression. She ended up on "Angel," the spin-off.