Well, that's one response to Rose getting married in order to save some people...
Tillun stood in front of the Doctor. "Rose comes with us. She isn't one of the Tylers any longer!"
"Sorry, haven't got time to argue," said the Doctor, lifting Rose up on to the horse.
Tillun was astonished. He launched himself at the Doctor, hands reaching for his neck.
The Doctor parried the attack with ease, tripping Tillun onto the hard ground and then leaning over to whisper in his ear, "It's a nasty feeling, being used. Sorry. But don't worry. There's plenty more, er, fish in the sea."
With that, he leaped onto the horse and effortlessly turned it in the right direction. It tore off, giving Rose a jolt so hard she was forced to wrap her arms around the Doctor's middle. She gave a last glance at Tillun, who was picking himself up, a look of hurt and confusion on his face.
"You enjoyed that," Rose told the Doctor accusingly.
The Doctor said nothing, and Rose wished she could see the expression on his face.
~ Only Human (Nine era tie-in novel.)
I'm thinking the expression was SMUG.