Buffy: Wild at Heart

Willow: "What if the girl wants to, and the guy doesn't? That's a bad sign, right?"Xander: "Could be. Or the girl caught the guy in one of the seven annual minutes he's legitimately too preoccupied to do it." So the writers had to find a way to write a popular character out of the show and they had no way of knowing if it was temporary or permanent -- and they still did a hell of a job.