Chapter Text
Two years later.
Some bookstores have a resident cat. Winchester Used Books has a resident novelist.
When he's not in class, Castiel Winchester (who still writes under Castiel Novak as a pen name, despite legally changing his last name) can usually be found in one of the squishy armchairs scattered around his husband's store, typing away on his laptop. Sometimes he's writing for a class, sometimes he's editing the last novel in his series. Sometimes he's trying out new ideas, trying to figure out where he wants to go once Alien Angels is finished.
Today is like any other day: Castiel is folded into a chair in a corner, laptop balanced precariously in a way that Dean swears defies physics. Dean is unpacking boxes of books in the stock room when Cas's phone buzzes in his pocket.
Barely a minute later, Castiel is in the stock room, laptop folded under his arm.
"Dean! He's in labor. His water broke."
Dean's eyes go wide and he drops the book he was holding back in the box.
Castiel watches his husband rush around the store, telling all of his employees that his paternity leave is starting and getting hugs and well wishes in return. Charlie runs up to Castiel and squeezes him tight.
"I better be the first person to hear when that kid is out and allowed visitors, you got it? If you guys' brothers and parents really wanted to be the first people you call, they shoulda moved to Lawrence. Unlike any of them, I can actually get to the hospital!"
They rush home, to the house they bought last year a few blocks from Dean's store. They have to prepare for the arrival of their daughter, Claire Rebecca (her middle name is for Castiel's mother, since Sam already took Mary for Olivia's middle name).
They'd signed up with an adoption agency soon after they blood bonded, knowing it might take a while for anyone to select an alpha/alpha couple to adopt their child. The male omega who finally met with them and eventually chose them is named Jimmy, and he has the same blue eyes and dark hair as Castiel so it's possible Claire might even look a bit like him. Jimmy was raped by a group of alphas while he was in heat. It's appalling that as recently as the 1980s in some states, sex with any omega during their heat could not legally be considered rape, but luckily those days are gone. It's still a tough crime to prosecute, but in this case there were witnesses. So Jimmy's assailants had been put away, but one of them had left him with a permanent reminder of the assault. He'd seriously considered an abortion, most people had expected it of him, but ultimately decided that he wanted to have the child and put it up for adoption.
He told them he was wary of placing her with any alphas at all at first, thinking he wanted a beta couple. They can't blame him for being wary of alphas after his ordeal. But he was intrigued by the idea of an alpha/alpha couple, realizing that at the very least they must know what it's like to be an outsider. When they met, he decided that Dean and Castiel are not the kind of alphas who would ever think less of a child who presented as an omega, male or female, as Jimmy's father had. Dean got outright pissed off when Jimmy described how derogatory his father had been, and was pleased to find out that his mother had taken him and left because of it.
And now Jimmy is in labor, and Claire will be here, probably within the next twelve hours. But probably not within the next two hours. So Dean and Cas have time to execute their Baby Readiness Plan.
Said plan involves having one last round of really great sex before they're too worn out to think about sex for the next several months.
The adrenaline from the excitement of the baby being on her way is coursing through Castiel's veins, and he channels it all toward his mate. As soon as they're in the door, he throws Dean against it, burying his face in Dean's neck to breathe in his scent and run his tongue possessively over the bite mark that shows the world that he belongs to Cas.
"Fuck, Cas," Dean breathes, head back against the door. "I been thinkin' about you all morning, baby. Want you inside me, Cas. I want you to knot me."
Castiel growls and bites at Dean's neck, feeling his mate go limp at the pressure. Cas lets Dean knot him occasionally, but he doesn't love it the way Dean does. Turns out Dean is a bit of a knot slut—or at least for Castiel he is. Cas knows that even though Dean has been with other alphas, Cas's knot is the only one he's had inside him. And once they'd tried it, Dean couldn't get enough of it. Cas likes to bottom, but he can only take Dean's knot if he's in the right mood. Dean wants it almost every time.
The mere thought of it has Cas almost completely hard.
He shoves Dean toward the stairs, but as soon as he starts to follow Dean stops, making Castiel collide into his back. Then Dean leans back, rubbing his ass against Cas's front in a way that he knows will drive his mate crazy, forcibly reminding Cas of their first time together. Cas grabs Dean's hips and thrusts against him.
"I've taken you on these stairs, and I will do so again, but the lubricant is in our bedroom so I'm not sure you actually want that right now."
"Right, lube, right," Dean is already barely coherent. Castiel's not sure he's even been with an omega who got as lost in sex during their heat as Dean does on a regular basis. Once he's turned on, Castiel can do almost anything he wants with him, and it's really brought out Cas's dominant side.
As they stumble into the bedroom, their shirts are already off. Dean reaches down to unzip his jeans when Cas grabs him and spins him around so they're facing each other.
"No. You undress me, first."
Dean nods, eyes not quite focused, and drops to his knees. As he pulls Cas's pants and underwear down, he takes a moment to lick and mouth at Cas's knot, already swelling, then runs his tongue over the head as he stands back up.
"That was so good, Dean," Cas says as he starts to undo his mate's pants, then continues to murmur praise as he undresses Dean.
He stays on his knees and takes Dean deep in his mouth, working him hard and fast until he can tell Dean is getting close.
"Cas, Cas you gotta—"
"I know. I know. You want to come with my knot in you, I know. I wouldn't deny you that." He shoves Dean toward the bed, and Dean automatically gets on all fours, his ass up in the air.
Castiel digs into the nightstand drawer and pulls out a jar of synthetic slick. They buy it unscented, and originally they kept two jars—one mixed with Cas's semen and one mixed with Dean's. They found that while using the one with the bottom's pheromones heightens the experience for the top, it's much easier for Dean to get loose enough to take Cas's knot if he has Cas's pheromones in him. So they finally mixed the two together, so they both get a dose every time, and it's a jar of this that Castiel opens to prepare Dean.
He works his fingers in, slick running down to Dean's balls. Dean moans and rocks back onto Cas's fingers rhythmically, never shy about what he likes. Once Cas is working Dean with three fingers, he pours more slick right into Dean's open hole, rubbing it around and into Dean's prostate to get him to loosen up even more. By this point, Dean is begging Cas to let him touch himself, especially when Cas hits his prostate, but he knows he won't be allowed. He knows Castiel likes to do that himself, and not until he's inside.
Cas finally slides in, only up to the start of the knot, and starts fucking him, slow but hard. Dean's hands fist in the sheets and pillowcases and he cries out with each thrust, while Castiel smooths his hands over Dean's back and tells him what a good mate he is, how much Castiel loves to fuck him and how he can't wait to get his knot inside.
Finally, he can tell Dean is getting close again, and Castiel is getting close himself. He bends down over Dean's back, peppering it with kisses as he reaches around and takes Dean's big alpha dick in his hand, pumping it in time with his thrusts. Just as Dean's pleas turn into babbling, and Castiel can feel Dean's knot swelling hard in his hand just like his own knot is, he pushes in farther, and oh god. There is no way an omega could feel as good and as tight around a knot as his mate's ass does. He starts to come almost immediately, squeezing Dean's knot. Then Dean is coming, too, and the pressure around his knot only increases. They're both shouting, and Castiel bites down on Dean's neck over his actual mating bite and holds on while his knot pumps wave after wave of come into his mate.
They finally drop down onto the bed together, spent. Cas wraps his arms around Dean's waist and cuddles close, always happy to hold Dean and shower him with more praise while they wait for his knot to go down.
"You're so good for me, Dean. So fucking hot. Such a good alpha, opening yourself up for your mate like that, letting me in so easily because you know you're mine."
"Cas, fuck, you feel so good inside me. Wanna feel you pump more of that come inside me, baby, come on, I know you can get more out."
Castiel nuzzles under Dean's ear, licking and nipping at the skin, and reaches down for his mate's still-hard dick. Blood bond pheromones, they've discovered, do wonderful things for an alpha's stamina.
"You know the easiest way to do that," he rumbles, and starts to stroke Dean again, keeping his hand near the knot and squeezing it tight.
It barely takes a minute to bring Dean to orgasm again, and the feeling of Dean clenching around him is all it takes to push Cas back over the edge. Their second orgasms are shorter and less intense, which is to say they're the kind of average orgasms they usually have without Cas's knot in Dean's ass.
Cas's knot goes down fairly soon after that, and they shower and dress and check in on Jimmy's progress. Jimmy's sister is his labor coach and is sending them regular texts. He hasn't started pushing yet, so they double-check the nursery, then go through the diaper bag and make sure they have all the supplies they've discussed. They'd sent texts to their family letting them know it was the big day, and they have to send out a round of "no, not yet" texts as people start to get antsy.
"What the hell, why is Sam even asking? Jess was in labor for nearly a day with both their kids. Jimmy's going at warp speed compared to her. He knows this shit takes time."
Finally, three hours later, they get the message: Jimmy is about to start pushing. They know that it can still take an hour or two even from that point, but they head to the hospital and finish the time in the waiting room.
Two hours later, a nurse comes out to call them.
They go into a delivery room, and meet their daughter.
They do not, in fact, have sex again for nearly four months.