Willow's reaction to Xander + Faith

[Ethan Reigns]

I don't think Willow was jealous, I think she was upset because Faith used Xander.

At this point, she was not aware that Faith had almost raped Xander; at this point she thought he might have seduced Faith. Xander was trying to look cool when he mentioned having a "special relationship" with Faith. Willow had no reason to think this relationship was any less real than he had mentioned.

 

[BuffyElevated]

I think there was also an element of, in Willow's mind, that she'd be the one that Xander would lose his virginity too. They'd gone through so much together, and there was probably still something in the back of her mind that said they'd be together. Eventually. And then Faith stole him away from her, the same way she'd been stealing Buffy. And I'm sure there was also the fact that he didn't tell her right away... she probably though that she was important enough to him that he'd tell her, and him not doing that betrayed her trust.

I definitely agree. I think at that point in Willow's life, she still had deep feelings for Xander, even if Oz was in the picture. He was her first love, and I think she was deeply hurt that it wasn't her, or at least someone with a deeper connection to him than Faith. Not to mention Willow's jealousy over Faith's relationship and bond with Buffy... I'm sure it felt like Faith was taking everyone she loved away from her.