"Is that all this is? A game? Is that what human emotions are to you? Things to play with when you're bored?" Rose was crying, but her voice was clear. "'Cause I'll tell you something, Doctor: it's not a game to me. You might think it's fun to go gallivanting off to fifteenth-century France, but it hurts."
The Doctor was pale. "Rose—"
"You can apologize all you want, but the next time a beautiful, important woman looks at you, you'll be gone. Am I not good enough for you anymore?"
"You're brilliant, Rose Tyler."
"Then stop leaving me behind."