Cas is pacing back and forth in the common room. He's been at it for over an hour, and Sam has thought a few times now that he'd seen a tiny thread of smoke drifting up from the carpet. Dean is in the bedroom with the door locked tight. Occasionally Cas will stop pacing and go to knock on the door, but he hasn't gotten a single word in response. Sam realizes with a exasperated sigh that it's once again up to the little brother to fix the mess. He leaves Cas to burn through the carpet and goes to knock on the bedroom door.
"Dean, it's me." there's only silence. "You can't stay in there forever Dean. You're gonna have to talk to one of us."
Watching Cas walk his monotonous circuit had been driving him a bit nuts, so Sam retreats to his own room and sits on the foot of the bed. He pulls his cell out his pocket and brings up the text messages between him and his brother.
After deliberating for a few minutes, he brings up a picture he'd taken recently. It's a shot of Dean and Cas snuggled up into the corner of the couch, watching a movie. Dean has his chin on top of Cas's head and he looks completely calm. Sam had never seen him that relaxed before this whole thing with Cas. Now he got to see it all the time. The fallen angel was snuggled so tight against Dean that it looked like he was trying to wear him as a coat. Cas had his eyes shut, and an easy, lazy smile. Sam had originally taken the picture to tease his brother with, but once he really looked at it he couldn't. Dean was actually cuddling with his boyfriend and Cas was completely ignoring the movie, he was just basking in the warmth of his 'beloved'. The picture was too damn cute for him to ruin it by teasing them.
He sends the picture to Dean with a text.
-He doesn't look like he's suffering to me. You both look pretty damn happy.-
It's been almost half an hour when Sam's phone buzzes.
-I can't let him do this for me Sam. It's too much.-
Sam sighs and rolls his eyes.
-You're not 'letting him' do anything. It's already done. Remember what I told you before? Let him make his own decisions.-
He doesn't get a response to that one.
The next time Cas goes to knock at the door, he tries the knob and finds it's been unlocked. He opens the door and enters cautiously, very aware of the possibility that he might be assaulted with flying projectiles. When he's inside with the door shut behind him, he spots Dean in the corner. He's hunched up in a little ball, rubbing his temples.
Cas goes to him, and with out a word he coaxes him to stand up and guides him over to the bed. Once they're both seated on the edge of the mattress, Cas leans over and places a gentle kiss to Dean's brow.
"I'm sorry Cas." Dean sputters. "I'm- I- I just… Is this really what you want?"
"Yes, it is. I wouldn't have done it if I wasn't absolutely sure."
"You really wanna give up everything? What about the other angels? Will you still get to see your family?"
"They can come visit me if they wish. I'm not that concerned whether they do or not. They're just a bunch of dicks with wings. And I get to see my family every day. You and Sam are my family now."
Dean blushes as he lifts his head to meet Cas's gaze. "You really think you're ready to be a Winchester? It's not as glamorous as it looks."
Cas reaches over and twines their fingers together. "I'm not sure if that's meant to be a proposal, but if it is, then yes. I would be very happy to take your last name when we get married."
Dean shrugs. "Well if you're accepting it then yeah, I guess it is. I'm thinking long engagement though. I wanna make sure we do this right. You wanna be my fiancé for a while?"
Cas holds up his left hand up and wiggles the fingers. "If you want it, then you'll have to put a ring on it."