20th Century Fox/Everett Collection
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Xander (Nicholas Brendon) and Willow (Alyson Hannigan), Buffy the Vampire Slayer
Where do we even start? Despite Willow's longstanding crush on Xander, the two always felt more like siblings than a romantic couple, so their illicit kiss just felt wrong on so many levels. (Yeah, yeah, they didn’t do it, but…) Not only were they cheating on their respective significant others at the time (poor Oz!), but this act also made the Scooby Gang weaker. A Slayer needs a steady support system!