The Doctor looked at her with the same sort of wonder that he always reserved for those words. Sometimes he still couldn't believe it. Him, the man who had seen nearly everything the universe had to offer, and he was positively gobsmacked by the love of his Rose.
"Love you too," he mumbled back, stealing another kiss. That bit she was doing on the neck was just cheating. It was getting more and more obvious that her attentions were having an effect on him, and he really hoped she wouldn't be embarrassed when she felt just how strong the said effect was. He felt like a teenager with his hand up a girl's shirt for the first time again.
Had he ever actually been a teenager with a hand up a girl's shirt, come to think of it?