Oh, and I thought of this drabble just after posting the fic; it's probably closer to the spirit of the prompt.

"Well, that's all done and dusted," the Doctor said. "Now, we need to go before Commander Radnor starts asking us awkward questions."

"You three go," the Brigadier said. "I shan't be coming with you."

"What?" Zoë gave him an astonished look. "You've only just started travelling with us!"

"Aye," Jamie added. "All you've seen is Krotons and Ice Warriors. There's so much more out there."

"What's happened?" the Doctor asked.

The Brigadier cleared his throat. "Earlier today, Doctor, I asked Miss Kelly for the honour of her hand in marriage. And I am pleased to say that she accepted me."