Nicholas Brendon plays Xander, the wisecracking best bud of the slayer. Xander is not so secretly in love with Buffy, but is currently dating Cordelia. A very opposite pair! Xander is somewhat of an outcast, much like is forever-friend Willow. Xander is always around if his friends need him, but his life is a bit complicated, or so he says!
In season 3, Xander cheated on Cordy with Willow. When Cordelia found out, she never forgave him! Xander has sort of been left out of some of the action this year because he doesn't have some kind of super power (slayer, witch, etc). Recently, a relationship between Xander and Anya has begun to develop!