first, i love xander. i loved that he came by all the time, that he hated the portapotties, and that he took care of giles and his man bits. and it was clear that everyone thought buffy was being a beyotch but no one would just tell her so.
and it's a perfect explanation to why sunday was kicking buffy's ass for no obvious reason. of course something was all messed up!
but then she totally steps up! and is like, i have to have sex with giles? okay. and she just goes upstairs and does it, partly because it's her job, but she could've been all childish and terrible about it, but she WASN'T. love.
and giles coming out of it was just perfect. he wasn't like, WTF, he was like, yep, this is what i needed to be better. and buffy being like, i used the red one. all matter of fact.