It takes just about everything Dean has not to break down right then and there as Mary kisses his forehead. He's never had anything remotely close to this kind of affection, and it's good, so good, but it's bittersweet, as well. This is one of those things Dean knows that when, eventually, they do go home, is going to leave a gaping hole.

"Right," Dean mutters, sinking further into the bed and closing his eyes. "Nap sounds good."