The two words send a lightning bolt through Jon. It wasn't as though there was any mistaking how much she cared for him and how close to him she felt-- for the Gods' sakes, she was laying naked beneath him in a hayloft, ready to give him herself. But to know she was his, even for a single night... there wouldn't be a place on the Wall he couldn't warm with the memory.

He can feel Daenery's leg move and feel her urging him. Jon looks down on her with the plain, open concern he's always shown for her. "Are, uh, are you ready?" That he could hurt her quite a bit if she wasn't, Jon was aware, and that was the last thing he wanted to do.