She's vibrant, relaxed a bubbling ball of energy and he feels himself sucked into her mood against his intentions.
He's fascinated with her lips while she talks, while she laughs and God never before in his life he's envied a piece of cotton candy.
He's surprised at how much fun his immunologist is and he silently thanks Wilson for being busy tonight.
For a moment he lets himself consider the possibilities.
Hold on to this a voice whispers to him and then she snatches the cotton candy and throws a witty line before racing to the car and he's already forgotten again.
Maybe he should have remembered.