Also Read: Sarah Michelle Gellar Plays Dress-Up With Iconic 'Buffy the Vampire Slayer' Costume (Photo)“I AGREE! (during squee),” the “Buffy” creator tweeted.“I’ll vote yes to that!” Alyson Hannigan, who played Buffy’s best friend, Willow Rosenberg, tweeted, before adding: “Actually Buffy should have dated Willow.”“I can see that!” Nicholas Brendon, who played Buffy’s pal Xander Harris, tweeted.Charisma Carpenter, who played popular girl Cordelia Chase on “Buffy” and later became a love interest