"Sure. Healthy." Dean had a feeling that if his feelings did just explode suddenly and he did have some kind of breakdown, Sam would be the only one around to really help him clean up that kind of mess. It was better that way, really. Cas was family but something was so severely wrong with him and Dean preferred to rely on Sam, even if he knew now Sam was the one who needed to rely on him.
Pressing into the kiss for a moment longer, Dean pulled back and patted Sam's cheek lightly. "There. Happy? You should hit the hay, now." Sam needed to sleep, given he was sick 'beyond repair'.