"If I really thought you had, I wouldn't have asked the Doctor to take you with us." Rose held Adam's gaze. "You can do better, though. I thought you would, and I didn't like being disappointed. Being wrong, and looking bad in front of the Doctor for it. 'S why I don't take on more than one companion m'self." She gave him a little grin. "That, and I don't have anything as fancy as the TARDIS."