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“God, Spock, look at you. Doing so good, sweetheart, so good.”
Spock whimpers, and Leonard runs his fingers through Spock’s hair soothingly. This pon farr is so different from the last one; they had known so little about a Vulcan’s time of mating (no thanks to Spock), but even if they had understood it better, Leonard’s not so sure the outcome would have been any different. None of them had been willing to face the fact that they were in love with each other back then.
They tried their best to prepare for this pon farr, but now that it’s started, Leonard isn’t so sure he’s ready. He’s glad they’re staying on the ship and not going to Vulcan; he’s almost certain that between the intense heat and humidity and the audience of voyeurs, he wouldn’t be able to keep it up enough to fuck Spock properly. They’ve only just begun, and Leonard’s already starting to feel worn out, his age catching up with him. There were days left, according to Spock’s prediction. Good god.
So much had changed in seven years. During Spock’s previous pon farr, all three of them had had the emotional intelligence of a brick. Leonard still has moments where he finds himself in awe that they actually got together, actually worked up the courage to tell each other how they felt. If he were being honest, he always assumed that Spock and Jim would get together without him. He didn’t think he’d actually be lucky enough to be included in their relationship, and it had been a hell of a shock when he’d learned that they both cared for him that way too.
But now they’re here, with Jim’s fingers pumping in and out of Spock, stretching him out. Despite what Spock insists, face smushed into the mattress and drooling everywhere as he begs to be filled, Leonard knows that Spock needs to be stretched out before he can actually take them both.
Spock is a mess. The plak tow hasn’t quite hit its zenith, but already Spock is left squirming against the bed, his sheath sopping wet, soaking the sheets underneath him. Sure, this isn’t the first time they’ve all had sex with each other, but it’s never been like this, with Spock’s sheath gaping and twitching and begging to be filled, and that’s left Leonard feeling a little nervous.
In normal circumstances, Spock’s sheath is tight. His lok usually extends, making it impossible to fit more than a pinky finger between the shaft and the inner walls of the sheath. But during pon farr, Spock’s lok won’t extend. It will remain nestled in Spock’s abdomen as the sheath itself loosens, allowing for penetration and, as is the goal of a mating cycle, impregnation.
With Spock much looser than normal, Jim’s got it into his head that Spock can probably take them both at the same time, hence Leonard’s nerves. It’s mostly excitement though; they didn’t get to have this kind of fun during Spock’s last pon farr.
“You’re doing so good, Spock,” Leonard purrs, rubbing Spock’s thigh tenderly. “Taking Jim’s fingers so well. Think you can take his cock, darlin’?”
Spock groans, thrashing against the sheets. “Please. I can—take both of you.”
Leonard frowns, patting Spock’s leg before pulling it away. “I’m worried that we’ll hurt you, baby.”
From between Spock’s legs, Jim says, “He’s loose, Bones. I think he could take us already.”
“Please,” Spock begs, drawing his thighs further apart. He breathes out, “Claim me as yours, fill me,” and Leonard is unable to stop himself from moaning softly.
“Shit. Okay, let me just—find the lube, and—”
Jim snorts. “Seriously? You can see just as well as I can that he’s soaking wet, Bones.” Jim then looks at Spock, his gaze softening. “You ready, sweetheart? I’m gonna lie back and you can ride me—think you can handle that?”
Spock whimpers, nodding. “Yes, Jim. And will Leonard—?”
“He’ll slip in from behind once I’m inside you and you’re ready.” Jim stretches out on the bed, then holds out his hands to Spock. “C’mere, Spock. I want to be inside you.”
Spock moans. He does as Jim asked, crossing over to where Jim lays, and Leonard can tell from the look on Spock’s face that they’re losing him to the blood fever, his eyes starting to look all glassy. He lifts himself up over Jim, and Leonard watches, unbelievably aroused, as Spock drops himself onto Jim’s cock with a loud cry of pleasure.
“Yessss,” Jim hisses. “Just like that. So good, Spock. Taking me so good.”
Jim rolls his hips, his movements careful as he tests Spock’s sheath, all while Spock is making these broken little noses. Jim’s panting as he says to Leonard, “He’s very loose. He can take you now.”
“I want to watch you two first,” Leonard hears himself say, his face starting to burn. Jim grins, and his thrusts take on a rhythm, his cock pumping in and out of Spock’s hole as Spock does his best to stay upright. Leonard swallows and adds, “Kiss him, Spock. I know you want his mouth on yours.”
Spock whimpers again before dropping forward, propping himself up on his forearms as he kisses Jim messily. Leonard moves around to Spock’s backside, rubbing a hand over Spock’s ass as he looks at where Jim and Spock are joined. It’s such a mess, with slick streaming down Spock’s inner thighs and coating everything. “God,” Leonard breathes, “I wanna taste you, sweetheart. Wish I could fuck you and taste you at the same time.”
Spock’s groans are muted by Jim’s mouth. Leonard wets his lips, asking, “Well, what do you want, Spock? Do you want me to taste you, or do you want me in you?”
Spock draws his mouth away from Jim’s, releasing a shuddery sob. “Need you inside. Need you to fill me. Both of you.”
“Yeah? Why’s that, darlin’?”
Spock shakes his head, like he can’t bring himself to say it. Jim nudges Spock gently with his knee. “What is it, Spock? Say it.”
Spock croaks out, “Need to be claimed. Please, fill me, mark me with your seed. Make me yours.”
Leonard groans, his cock twitching. “You want us to knock you up, sweetheart? Is that it?”
Spock sobs again, nodding, and then Jim is pulling Spock down and kissing him once more, thrusting up into Spock’s wet hole, a repetitive squelching sound filling the room. A thrill rushes through Leonard, though it’s those nerves again, too—they talked about this beforehand of course, but the fact that they were actually doing this made Leonard’s heart race with excitement.
“Alright, darlin’, doing so good. You ready for me? I want to give you what you need.”
Spock nods again, not even bothering to pull his mouth away from Jim’s. Leonard moves forward, reaching underneath Spock to where Jim is pumping into him. “You’re so wet, darlin’. I’m gonna use it to get myself slick, and then I’m gonna get inside you. Gonna make you feel so good.”
Spock groans once more, and Leonard takes that as a go-ahead. He slicks up his fingers, thankful that Vulcans produce so much lubricant during pon farr, and once he’s satisfied that he’s slick enough, he presses himself against Spock, placing a hand on Spock’s back and pressing down gently, urging Spock to bend over further on Jim. Spock complies, and aloud, Leonard explains to Jim, “I’m gonna enter him now. Let me know if something doesn’t feel right; I don’t want to hurt Spock, but I certainly don’t wanna hurt you, either.”
“Will do, Bones,” Jim says before turning his head and mouthing at Spock’s ear. “God, Spock, you’re shaking. I bet you can’t wait to have him in you, stretching your sheath out. Bet you’ve wanted this for a long time, just didn't know how to ask. Am I right, Spock? Did you just not know how to ask for this?”
Of course, they wouldn’t have been able to do this outside of pon farr, though there had been discussions of them both penetrating Spock’s ass in a sort of fantastical way, the sort of discussions only had when everyone involved is rock-hard and murmuring dirty things in each other’s ears. But Leonard’s sure that that’s not the only thing Jim is teasing him about, not with Spock shuddering and trembling over the idea of them getting him pregnant.
Leonard grips his cock and lines himself up with Spock’s sheath. It’s difficult with Jim already inside, and Leonard huffs out, “Jim, quit moving or I’ll never be able to get inside of him,” when Jim continues his lazy thrusts in and out of Spock.
He’s almost hazy with pleasure himself; if he’s this aroused, he can’t imagine what Spock is feeling right now. He cautiously squeezes the head of his cock into Spock’s sheath, slipping it only an inch inside before he stops. He bends his knees a little and readjusts, changing his angle before trying again, and this time he’s able to slip in halfway.
He gasps at the sensation. Spock’s sheath is tight, though not as tight as Leonard was worried that it would be. But even more thrilling is the feeling of Jim’s cock pressed against his own, so foreign and so new of an experience. Jim exhales sharply as Leonard bucks his hips, nudging Jim’s cock and burying himself even deeper inside Spock’s sheath.
It takes a few more careful thrusts, but soon most of Leonard’s cock is inside of Spock. His knees are shaking with the effort of holding himself up, and he leans against Spock’s back for support, his mouth pressing against Spock’s shoulder. “Alright, darlin’, I’m in. We can start fucking you proper now.”
Spock whimpers, and Jim captures his mouth once more in a sloppy kiss as they start to fuck Spock.
It’s awkward. They can’t seem to figure out a rhythm, and none of them are the young men they once were, though Leonard is sure that even if they were still young, this would be difficult on their joints and muscles. But Spock is shaking, and he’s making noises that Leonard has never heard before, and Leonard knows that even though they’re struggling to fuck him that this is giving Spock exactly what he needs.
Leonard wraps himself tighter around Spock, focusing on the feeling of Spock’s hot, slick channel squeezing him tight. He presses his mouth against Spock’s burning skin and says into it, “Love getting to use you like this, Spock. Like you’re our toy.”
Spock shivers, a choked-up sobbing noise escaping his throat.
“Yeah, you like that, don't you? You're being so good to us, taking us so good. How long have you been wanting to be used like this? How long have you been fantasizing about being bred? Did you think about us taking turns with you, or did you imagine us doing this, both of us spilling into your sheath at the same time?”
This time, Jim is the one to roll his head back and whimper, thrusting hard up into Spock. All three of them moan. “Shit, Bones, I’m not gonna last if you keep saying those things in his ear.”
“Bet he doesn’t want you to last,” Leonard says, smirking a little, though it’s mostly put-on. He’s sweating and his legs feel all weak and wobbly; he wouldn’t mind them finishing this round soon, if it means he can sit down again. “I know Spock’s thinking about getting filled with all that cum. Thinking about it sliding out of your sheath, darlin’? Dribbling out and marking you as ours?”
Spock croaks out, “Leonard, I—I cannot, please—!”
“Yeah, you want to be claimed, I know. But this one time won’t be enough, will it? We’ve got days ahead of this, of us taking turns filling you up until you’re sated. But you want it so badly, don’t you?”
Spock can’t speak. He sobs, starting to bounce on their cocks, his hands tearing at the sheets in an attempt to find something to hold onto, gripping them tight as he tries to steady himself enough to pick up speed. Leonard’s jealous of Jim; he wishes he could see Spock’s face right now, and he wonders if Spock is actually crying. He’s panting, his chest heaving, and Leonard is relieved that Spock appears to be close because he’s close too, so fucking close.
“You’re ours,” Leonard says, gritting his teeth a little as he tries to stay focused. “And everyone’s gonna know you’re ours when we’re done with you. You’re gonna smell like sex and cum for days when we’re done here, after rounds and rounds of pounding into you.”
Jim’s face is all twisted up and his lips part as he curses, “Shit, I’m so damn close! Oh—oh hell, I'm gonna come inside you, Spock, I’m coming, I’m coming—!”
Jim stiffens, burying his cock deep inside of Spock alongside Leonard, and Spock cries out, stiffening too, and in the haze of Leonard’s quickly approaching orgasm, it takes a moment for him to realize that Spock isn’t just stiffening but getting tighter. His sheath is squeezing them tight, locking them inside, and Leonard realizes with a groan that the sheath is plugging itself up to keep their cum deep inside of Spock.
Leonard whimpers as one particularly intense squeeze around his cock does him in, and he coats Spock’s inner walls with his cum, still spurting into Spock long after he has collapsed against Spock’s back.
No one speaks immediately; the room instead is filled with the sounds of heavy breathing and the occasional groan. Jim’s cock is still nestled inside of Spock right against Leonard, and as it twitches against him Leonard whimpers, shifting a little. He moves one of his hands to his dick and tugs carefully at it, finding that it won’t budge. It doesn’t hurt, though each time Jim shifts a little, Leonard winces, overstimulated.
“Can we change positions?” Jim asks. “I’m getting crushed here, gentlemen.”
It takes a lot of maneuvering, but they’re able to all lay on their sides on the bed, panting from the effort of getting themselves comfortable. Spock seems thoroughly fucked out, lying contentedly between them. It’s possible that Spock is falling asleep.
“How long do we have again?” Jim asks, smiling softly down at Spock. He moves one of his hands to Spock’s head and starts to run his fingers through Spock’s hair.
“Thirty minutes, give or take. Though I’m not sure if it’ll be longer with us both inside of him.”
Jim grunts, propping himself up on his elbow. “Well, I guess we should do our best to kill some time while we wait for his sheath to… deflate? Damn. It’s like screwing a blood pressure cuff.”
Leonard laughs. That’s an image he’ll never be able to get out of his head. He leans forward, pressing his lips against Spock’s temple, and Spock sighs in satisfaction. It’s good that he’s resting; he’ll be up for days when the plak tow really hits its stride.
Leonard looks back up at Jim. “Well, while I’ve got you stuck here—” he starts, and Jim snorts, flicking him playfully on the arm. “—you want to talk baby names?”
Jim’s expression softens, and his eyes get this wistful look to them that makes Leonard’s insides all twisty. Jim swallows, dropping his gaze, but he’s unable to hide the smile growing on his lips from Bones. “Who do you think will knock him up?”
“It’s anyone’s game,” Leonard replies. He’s got butterflies in his stomach at the thought that Spock might already be pregnant. “If he isn’t already, he will be by the end of all this.”
Jim hums in contemplation. “It’ll be like that old musical. What was it called? Mother—?”
“Mamma Mia,” Leonard replies, amused. “Though I think we’ll know whose kid it is when they come out with my stunning blue eyes.”
Jim snorts. “Funny, I was just picturing how they’ll look with my nose and blond hair.”
“With our luck, the baby won’t look like either of us. Just you wait, the kid’s gonna be the spittin’ image of Spock and we’ll both be wondering if someone else got their hat in the ring.”
Jim laughs, and smiling, Leonard leans in over Spock and kisses Jim. It’s brief; when Leonard pulls back, he yawns. “I suppose we should rest too if we want to be up for another round when he’s ready.”
“Right, right,” Jim says, and then both readjust to the best of their ability, lying down with Spock between them.
“Sleep well, Spock,” Leonard says, and Spock hums softly, awake but just barely.
It falls quiet, and Leonard shuts his eyes.
And then Jim starts singing under his breath.
Leonard recognizes the tune; he opens his eyes and glares at Spock’s back, as if Jim will be able to feel his stare despite Spock’s body being in the way. “Jim, what the hell are you singing?”
“Well, since we brought up Mamma Mia—”
Leonard doesn’t let him finish that thought. He snatches up a pillow and flings it in Jim’s direction, smiling to himself when Jim yelps in surprise.