Amy Pond and John Watson
It was probably not the best idea in the world for Amy to drag John out to the Stark Halloween party. She'd been dealing with a stalker, she'd been struggling in her job because of it, and she'd been a bit scared to leave the house. But she had to get out. She wanted to get in costume, go out and have a good time.
She was wearing cat ears and a leopard print sweatshirt. She'd painted whiskers and a black nose on her face. It was about as much enthusiasm as she could muster. But she was really enjoying purring and sharpening her claws against her boyfriend's shoulder.