Up on the roof, Cristina decides she should probably get back down to her own party. Derek says that's for the best, yes. He pauses, then asks if there's anything else she'd like to talk about. She hesitates, then sits back down: "What do you do about bathroom tile." Pour another glass of wine, this could take a bit.
Joe R should give Derek more credit for being right about how to approach Cristina, but he doesn't want to. He can be reached for lavish praise and nothing but at email@example.com, and you can listen to him yammer on to his heart's content on the Extra Hot Great podcast.