See the smile that graced her features, the pure joy that being in space brought to her, made the ends up his own lips turn up as he quickly pulled her back into the TARDIS. Instinctively, his arms were around her but it was something else that kept her there. Something carnal, something he couldn't control. "Now do you believe me?" Still, his arms were enclosed around her, the warmth from her seeping into the tweed of his jacket. She must be freezing in her nightie, he began to think, knowing all too well how chilling they could be. And that's when he was pulled out of his revere, pulled out of her warmth the knowledge that he had yet to let her go. "Your box is a space ship. It's really really, a space ship." He turned his gaze to the stars around him, knowing that something inside him would snap if he looked upon her. She had been seven years-old only a day ago, the first person he met with his new visage. She had been adorable and innocent and now, now she was something brilliant. "We are in space!" Her laughter filled the air and for the first time in his existence, the Doctor accepted defeat as he watched her smile grow.
[For ManEatsFishCustard since they pointed the scene out to me. I was so freaking amazed and like..AHHHHHHHHHH...don't make fun of my 'like' ness. I'm a Valley girl, it's allowed :)]