Cas leaned back, letting himself be pushed further back into the water until it covered his head up until his hairline. Dean's fingers keeping him from just dipping completely under were perfect. He closed his eyes, feeling some of the worry wash away. Some remained: things he didn't know how to ask or how to say properly, but he thought maybe they could wait until he was a little more detached from the night. Having some objectivity on the matter could only help.
"I love you," he said, and it sounded strange with his ears under the water, but not wrong.
Dean helped Cas sit up again. “I love you too.” He leaned down and kissed him even if it was a little upside down and weird angled. “You gonna be okay if I leave you in here for a couple minutes? I’ll only be in the other room.”
The fact that he actually had to consider the question for a moment was a little worrying, but eventually Castiel gave a little nod of assent. "Yes." He leaned on Dean until it was clear his husband actually did want to get up and go into the other room, and then he reclined on his own, sinking down until only his head was above the water.
"Dean? I really wasn't doing anything with him. I never would have." He was fairly certain the other man knew that, but he couldn't not say it.
Dean looked back at him. “I know that now,” he said softly. “But I don’t regret what happened. You were beautiful. You have no idea.” And with that, he went into the bedroom to clean up their mess, to remake the bed with military precision that would please Castiel and change the linens and put all the dirty clothes in the hamper. The armchair was going back too, and uncertain what to do with the other cockring, Dean just set it back in the packaging to mark it as not Castiel’s and put it in the drawer.
As far as he could see, their room was back in perfect order, or as close to perfect as it could get. He returned to Castiel and leaned against the sink. “I love you. So damn much, Cas.”
Half asleep by the time Dean had returned, Cas only offered a tiny smile in response, not even bothering to completely open his eyes. The water was still fairly warm, a liquid blanket that covered every bit of him and offered comfort in nearly the same way that Dean's quiet words of praise had.
Yeah, sitting in the tub like that wasn’t a good idea, not when Cas looked like he was about to fall asleep and drown. “Come on,” Dean nudged him gently. “Let’s you get to bed, angel.”
Without protest, Cas allowed himself to be taken from the tub. He stood, half swaying in exhaustion as Dean dried him off with a quick but gentle precision. He didn't feel up to brushing his teeth, but did manage a quick rinse with mouthwash the left his mouth tingling freshly even as he was lead into the bedroom.
Honestly, he couldn't remember getting into the bed, but knew the sheets were clean, and smooth and that he felt safe in Dean's arms and that it was okay. It was okay to sleep now, and Dean would be there with him and he would be there when he woke up. So he slept.