For awhile, The Doctor just watched her, a slight look of confusion marring his features. He just couldn't quite figure her out. One minute, she'd seem as if her world depended on him.
The next, he was having to slag along Ricky or that idiot Adam along, or some other pretty boy who had caught her fancy. If he didn't know better, Nine would have thought she was trying to make him jealous.
That was a lifetime behind him though. He could tell from her breathing that she had slipped to sleep, and he finally let his eyes closed, hand clasped in hers. There'd be time to think on that in the morning.