It's what he wants her to remember. He may leave, but he always comes back. It's something he's good at. Both the leaving and the coming back. He's working on the first one though.

"Yeah." He agrees it quietly and gives her hand, still in his despite them both, a light squeeze. Looking sidelong at her there might be the faintest hint of a smile at the edges of his lips as he says: "Now show me what makes you happy here."