"Are you smiling? Do the wonders never cease?" It was not something he saw too often, but every time he did, it surprised him how relaxed Illya could be. Much like Illya, he didn't have many close friends, could count them on his hand really. Yes, he was friendly, but there very few people he let his guard down around.
And it was nice when he could. Who knew it would be a Russian KGB agent that would bring out this feeling in him.
"Alright, teach me your ways, Sambo master. I'll let you throw me around"