Continuity mistake: During Anya's pep talk to the Potentials, Andrew draws crude illustrations to visualize what she is saying. One the second page that uses to draw a picture of the sun, the top of the previous page that's folded over the back of the board changes from being folded straight to folded at an angle between shots.
Continuity mistake: In the episode 'Empty Places' when Xander is returning from hospital Kennedy is standing beside the couch to greet him and Willow. When Xander sits down she is sitting on the couch, but she wasn't out of shot long enough to have gotten there.
Chosen answer: Angel is saying that he is still jealous and Buffy recognizes that this is his way of saying he wishes that they could be together. That is why they both smile.