
She reads him like an open book.
I’ve always had this head-canon that she sees right through his emotional distance. She reads his heavily veiled emotions fairly easily - not perfectly, but easily enough that he has to be extremely careful around her with his feelings, otherwise she’d know immediately. She can even hear a lie in his voice. She just knows him so well. He finds it endearing and at times he loves it, but it’s strange too, because someone knows him so well that it’s like his nose grows like Pinocchio that’s he has to double his efforts to hide something.