He closes the door to the TARDIS and turns around to find Martha facing him directly.
"Doctor," she says, twiddling her fingers anxiously.
"What?"
"It's later," she tells him. Then, staring at him rather apprehensively, she takes a step or two to close the gap between them.
Her lips are just before his, but he sees something change in her eyes as they search his own and at the last moment, she drops her gaze.
"Sorry," she tells him, hastily, and then pecks a kiss on his cheek instead.
She looks at him for a moment, like she's waiting for him to say something, but he doesn't—what does he have to say?—and she quickly turns back around and walks further into the TARDIS.
"So," she says after clearing her throat. "Where to next?"
A/N: I feel like something like this needed to happen.