His boyfriend is a lot more polite about a lot of things. Jack has lived long enough that he gets tired of being played and lets it show through.
He's also lived long enough, however, to recognise the signs of someone equally letting their veil drop - and when he's being threatened.
"Well, then," he drawls slowly, and in a way it's a relief to drop the charade, however entertaining the banter has been. "I guess I know where I stand." His lips twitch slightly, his eyes holding hers, strong and challenging even while overtly he backed down. "I am, of course, extremely grateful to you for changing the rules on death here. That you choose to give, as well as to take away."