Mark Sloan: I'm sleeping with Meredith's little sister. Derek's Mom: Which one is she? Mark Sloan: The one with the juice box. Grey's Anatomy quotes
I'm glad they both died. It may sound harsh but I am because there's no way one could live without the other. He never would have forgave himself and been eaten away with guilt and dreams of her and she wouldn't have gone on to the afterlife without him.