[When Stiles answers the door, the bruise on his face is at that yellow-purple-green stage, and his split lip has healed nicely, just a thin line across the middle. And he actually is grinning at Derek when he opens the door.]

Hey! You actually came over to my place for once! This is, like, momentous occasion stuff here, I feel like I need to bust out a bottle of champagne and take lots of pictures.