Three Sentence Ficathon

Sometimes, when she caught a glimpse of him out of the corner of her eye, Rose thought she could see... something more about the Doctor (a kind of darkbright glow or sprawling energy), but when she looked at him more directly it was always gone. And then he'd look at her and grin that stupid grin and she'd forget that he was anything but her man-shaped Time Lord best friend.
That weird glow stayed with him after he changed, too, and though it was always hard to remember, it did help her to believe that this was the same man, even though his grin and his eyes and his hair and his style and almost everything else about him had changed.