A/N: I swear I am not a lame fangirl who puts a character based after herself into the story…oh wait, yes I am.

"How did you get here?" The Doctor finally questioned, watching his son as the younger half Time Lord circled him. "I closed the void a little more than 17 years ago..."
"I'm a Time Lord, at least, half Time Lord." He offered his father a light chuckle. "I've got the smarts and the skills." David came to stand in front of his father once more.
"Who's she?" He jerked his head in Katie's direction.

"My closest friend and companion." He tossed the young female a charming smile. The Doctor noted, with some amusement, that all malice and darkness vanished whenever his son paid attention to Katie. "She's a mixed breed. Human, demon...elf. She was being sold on a far away planet as a slave. I helped her escape, and she offered to be my companion. We've been inseparable since."

"Have you..."
"Slept together?" David inquired brow quirking. "Are you asking if we are a couple?"
"I guess yeah." came the Doctor's unsure reply. David glanced over his shoulder at his companion, who simply stood there, seeming...amused with the odd change of subject.

"I suppose that's just my business."