Giles: You mustn’t let Angel get to you. No matter how provocative his behavior may become. 

Buffy: So what you’re basically saying is, ‘just ignore him, and maybe he’ll go away’? 

Giles: Yes. Precisely. 

Xander: Hey, how come Buffy doesn’t get a snotty ‘once again you boil it down to the simplest form’ thing?… Watcher’s pet.

Buffy the Vampire Slayer – Season 2, Episode 17 – “Passion”