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Dean comes into their room carrying two full trash bags in each hand. He drops two and flings the other two at Cas.
“What’s this?” Cas asks as he catches one. Dean opens the ones near him, revealing all the costumes within.
“We gotta do a couple’s costume, Cas.”
Cas breathes out a laugh as he pulls a pipe cleaner halo from his bag. “Do we?”
“Abso-fuckin’-lutely,” Dean says, spilling the contents of all the bags onto their bed.
As Kirk and Spock:
Dean admires his reflection, standing with his hands on his hips as he poses in his yellow Star Fleet uniform. “Obviously, I’m Kirk.”
“Why is that obvious?” Cas asks.
“Because you’re Spock, and everyone knows they had a thing.”
“Ah, yes of course.” Cas nods, not understanding the reasoning but appreciating Dean’s conviction.
As Wyatt Earp and Doc Holliday:
“Say the thing, Cas,” Dean says as he ties Cas’ cravat.
Cas smirks at Dean’s barely contained enthusiasm. “You want me to do the accent, too?”
“Yes, please.”
“I’m your Huckleberry.”
Dean whistles. “...yeah all right, that does somethin’ to me.”
As each other:
“Hey, hey Cas,” Dean says, elbowing his husband. He frowns at Cas’ reflection, squinting as he lowers his voice. “I’m the one who gripped you tight.”
“That’s not how I sound, Dean.”
“That’s not how I sound, Dean.”
“Stop it,” Cas says half-heartedly.
“Stop it,” Dean says, still doing his impression.
Cas just sighs. Dean laughs. Cas turns back to the mirror to look at the way Dean’s jeans hug his thighs. “Your pants are a little tight on me.”
“Nah, I think they fit you fine.”
“Really? I feel like they’re cutting off the blood flow to my legs.”
“Mhm, mhm,” Dean says distractedly. Cas catches him staring at his ass.
“Dean.”
“Take ‘em off if you don’t like ‘em,” Dean suggests, wiggling his eyebrows.
“You trying to get into my pants, Dean?”
“Technically, I’m already in ‘em.”
As a bee and a flower:
Cas pats the striped belly of his fuzzy bee onesie. “This one’s cute,” he says, adjusting the antenna headband.
“Really? You like this? I feel kinda silly,” Dean says, pulling at the daisy petals surrounding his face.
Cas faces him to smooth out the petals. He squeezes Dean’s cheeks. “You look adorable.”
“Aw, shucks.”
✧🎃✧🎃✧🎃✧
Cas lays down in between costumes just in his boxers. Dean, halfway out of a skeleton costume, looks over at him.
“We have a lot more to go through, Cas, c’mon.”
“Can’t we continue later? We have more than two weeks till Halloween.”
“Yeah! Only two weeks!”
“Dean, it’s late.”
“But it’s -”
“Dean, please.” Cas pushes various pieces of costumes off the bed. “Lay down with me. We’ll finish tomorrow, I promise.” He opens his arms up to beckon Dean over.
Dean sighs, realizing he was actually pretty tired. And Cas looks very inviting. “All right.”
“Thank you,” Cas says as Dean curls himself into his husband. "I love you."
Cas can hear Dean's smile when he replies, "Love you, too."