Dean had to smile a little as Cas went about getting himself...ready for bed. That was a whammy in itself that this was actually happening and Cas was totally about to get into bed with him. He almost had to remind himself that it was innocent, and he was still actually clothed, even though seeing the coat slide off of Castiel's shoulders made Dean's lungs feel like he wasn't quite getting enough air. Stupid. That's what it all was. He raised a brow, though, half tempted to tell Cas that he didn't have to do all that with the folding and stuff, but it seemed pointless now.
Licking his lips, Dean just readjusted his arm under his head a little while he watched Cas settle, suddenly all too aware that Cas was looking right at him and smiling seemingly with enough ease that it made something inside of Dean do something weird that he did not want to think about. Why Dean would have expected the angel would ever think to assume a different position was way beyond him now. "It's memory foam." He said instead, unable to help the small smile at Cas' little gestures.
It was easier to stop thinking too much about his other conversations, about everything really. He could probably credit Cas for that, or just having someone in his bed in general, but it was more the angel than he wanted to admit. "You ever sleep, Cas?" He wondered, eventually looking back to Castiel's face, specifically his eyes, some little part of his brain trying to think of something to compare the blue to. "I get you don't need to, but if you wanted to. Could you?"