Albeit, Jason’s more than that to Tim. Tim loves him, wholeheartedly, which—everything he’s ever seen and read says that should mean he wants to keep Jason all to himself.

And he does. Mostly. With one little exception.

Tim loves him, adores him, and that means… he wants desperately to share him with Cass. Not all the time, or even frequently, but. She’s such a part of him that it feels only natural for her to share in this too, even if it’s only once.

Which is the only reason he brings it up to Jason at all.

Jason’s response is a quick and emphatic no. Tim doesn’t pout or plead—he takes the rejection gracefully, kissing his cheek and reassuring him that no is a complete sentence, and if he’s not comfortable, that’s okay. Tim still loves him, he’s not upset.(Maybe, privately, a bit disappointed, but he knows better than to say that.)

He’s pretty sure that’s the end of it.

Until Jason brings it up again, later. The image, the thought, hasn’t left his mind, and… tentatively, he’s willing to try it. 

Which brings them to now. Here. In Tim’s bedroom, the lights low, the three of them stripped to their underwear. Cass hangs back for now, perched to the side, watching.

Tim straddles Jason’s thighs. It splays his legs wide open, the kind of stretch that might burn a little if he wasn’t as flexible as he is. He’s got both hands buried in Jason’s hair, tipping his head back so he can kiss him hard and deep—fucking his mouth with his tongue.

Jason moans under him, hands resting on Tim’s hips. Spit smears around their mouths, dripping down their chins. It’s wet and messy and good, especially with how lax Jason’s mouth is. If Tim’s own tongue wasn’t in the way, he’s sure Jason’s would be hanging out like a dog.

God.

He’s so good. Part of Tim wants to glance over at Cass, ask with his eyes, Do you see this? Do you see how beautiful he is for me? But he doesn’t, because right now, this is about Jason.

About getting him comfortable and aroused and ready for Cass to join them.

He plunges his tongue as far in Jason’s mouth as it’ll go, straining his frenulum  in the process. It’s worth it for the noise Jason makes; for the flex of Jason hands on his hips. Fuck. Tim loves how strong he is, how easily he could manhandle him if he really wanted to.

How he doesn’t, because he wants Tim to manhandle him instead. (And Tim does, and can, because he may be small, but he’s strong.) He wants to be good. And that—

It’s heady.

He tugs Jason’s hair with one hand, drawing a delicious noise from him. His other hand slips down, gliding over Jason’s neck, shoulder, to grip at his bicep. The muscle is pliant under his hands; squishing easily when he kneads at it. Under the fat and lose muscle, though… Solid as rock. That makes Tim moan, licking into Jason’s mouth one more time before pulling back.

The lack of air is making him dizzy.

Jason, too, he thinks, judging by the way he blinks blearily at Tim, sucking in a deep lungful of air like he’d forgotten he was supposed to be breathing. It’s cute. Cuter still is the high noise Jason makes when Tim attacks his neck with lips and teeth and tongue. He refreshes old, faded markings before moving down, down.

He slides his other hand from Jason’s hair now—down his neck, over his shoulder and down to his collarbone, where it’s joined by the other. He cups Jason’s pecs in his hands. They fit in his palms almost like tits, fat and relaxed muscle plush and soft as he kneads with his fingers.

Jason’s moan is high and sweet.

It gets higher, sweeter, when Tim wraps his mouth around a nipple.

He usually likes to start slow. Soft. But he knows Cass’s mood tonight is neither of those things. Patient as she’s being, there’s an antsiness in her. Tim had offered to reschedule, but…

He’d known by the look in her eye what his sister wanted. He also knew that Jason was more than capable of rising to the occasion, regardless of how Tim chose to prep him. Still. Tim was going to get him used to it now, starting by sucking hard on his nipple… and following that with a scrape of his teeth.

Jason shudders, his skin pebbling with bumps, a sweet little whimper in his voice.

He hears Cass shift. Chances a quick glance over at her, and nearly smiles at what he sees, the way her gaze has gotten more intense. More interested. He can’t blame her. Jason really does make such lovely sounds.

It motivates Tim to draw more from him. He plays with Jason’s nipples until the man is shying under his touch—then, he leaves a ring of bruises around his pecs, loving the way he squirms.

Tim can feel Jason’s hips working. Small, minute shifts, seeking friction. His cock strains at his briefs—tight, black, with a little bit of red lace trim. Tim presses the heel of his palm against it, letting Jason grind on it.

It makes him pant, open mouthed, body trembling with each breath. When Tim takes his hand away, he whimpers again, looking at him with wide, pleading eyes. A glossy sheen of tears coats them, starting to gather in the corners.

Adorable.

Tim kisses his nose, and shoves at his shoulders. Jason goes, falling back into the bed willingly. He looks up at Tim with the sweetest expression—needy and wanting and so so adoring. Tim loves him.

Jason lifts his hips obediently when Tim hooks his fingers in the waistband of his briefs. They look so good on him it’s almost a shame to take them off, but. Tim knows for a fact what’s underneath is far prettier. He tugs them down his legs and tosses them toward the hamper.

Tim skims his fingers up the underside of Jason’s cock, watching the way he shudders; bumps pebbling on his skin. The flesh of him is hot under Tim’s fingers—precome saturates the head, drooling down the shaft. Tim swipes his finger through it, and sticks it in his mouth, ignoring the needy whimper Jason makes, instead humming, pleased, at the feeling of salt on his tongue.

“Grip the headboard, Jay— Good boy. Knees up for me, yes, just like that, that’s beautiful.” Tim reaches—Cass hands him the pillow he was looking for, and he thanks her with a brief smile. Jason blinks at her, like he’d forgotten she was here—and then smiles, shyly.

Cass smiles back, ghosting her fingers over the underside of his thigh. Jason shivers, arms twitching. Before Tim can ask, he’s raising his hips, letting Tim slip the pillow under them.

Cass hands him the lube next.

Tim cups Jason’s balls. Lifts them to expose his perineum, and drizzles lube over it, letting it dribble down to Jason’s hole. Jason flinches, keens. The headboard creaks under his grip, his hands twisting around it.

He stays where he was put, though, even as tears trickle down his temples. Cass hums, pressing up against Tim’s back, stroking over Jason’s calf as she hooks her chin over Tim’s shoulder.

Tim rolls his balls in his palm in reward—Jason shudders, head tipping back with a soft moan. Then Tim lets them go so he can slick up two of his fingers. He circles them around Jason’s rim, massaging the muscle. The muscles in Jason’s thighs twitch as they quiver. His belly jumps.

Tim pushes in with his index finger; just to the first knuckle. He keeps rubbing his rim with forefinger, biting back a smile as Jason fights to stay still. His cock drools, dripping onto his abdomen. Cass pets over Tim’s belly, humming as she watches. Her other hand is still tracing patterns over Jason’s calf.

He pushes in to the second knuckle, rubbing at Jason’s walls. Jason is hot around him, his passage silken. He pumps his finger once, twice—then withdraws. Jason whimpers, though it cuts off sharply when Tim plunges back in with both fingers, to the second knuckle. Jason clenches around him, wiggling his hips, a needy, plaintive sound in his throat.

Tim works his fingers, quickly working his fingers in to the third knuckle. Jason’s passage spasms around him, as if he can milk his fingers.

“Needy,” Cass says. 

Tim hums in agreement, and Jason whines, pouting at them both. The pout drops off his face when Tim crooks his fingers, rubbing over his prostate. Jason’s lashes flutter, mouth open in an O, more tears rolling down his face as he whimpers. His hips twitch a little, like he can ride Tim’s fingers.

The angle’s not good enough, though, and he’s forced to simply take what Tim gives him.

When Tim adds a third finger, Jason keens again, bucking, hands straining against the headboard. He can feel Cass’s breathing deepen, feel the way her hand presses down on his belly, the way she presses closer against his back.

“Taking me so well,” Tim croons as he stretches Jason open. He tears his eyes away from Jason’s face to watch his hole, the way it swallows Tim’s fingers. Such a pretty sight. He hums to himself.

Tim keeps teasing him, massaging his prostate, stretching his walls, until Jason is sniffling, crying, sweet, desperate sounds falling from his mouth. Then, Tim takes pity. Cass slicks up the plug Tim had set out, passing it to him when it’s ready. Tim withdraws his fingers. Jason doesn’t even have time to whine before Tim is rubbing the base of the plug against his hole.

It’s a little thicker than even three of Tim’s fingers—he watches Jason’s hole stretch to accommodate it, enjoys the way he strains, arching up off the bed, sweet little cries leaving him.

Tim rocks it until he’s sure it’s nestled right against his prostate. Then he pats Jason’s thigh. “Good boy,” he praises.

Jason sniffles at him, widening his eyes, pleading silently.

Cass laughs sweetly in Tim’s ear.

“Not yet." His cock throbs at the way Jason’s face drops. He holds his hand out automatically, accepting the final toy from Cass—a cock ring.

Jason whimpers at the sight of it, but he doesn’t put up a fuss when Tim works it over him, fixing it to the base of Jason's cock. He kisses the tip, precome smearing on his lips, and pets Jason’s flanks.

“Alright, sweetheart,” he says. “You just relax for me. Deep breaths—just like that, very good. Keep your hands on the headboard for me.” He cards his fingers through the hair on Jason’s belly a few times, watching as Jason does what he’s told, eyes fluttering shut.

When some of the tension has eased from his shoulders, Tim moves, sliding up to sit next to Jason’s head, leaning back against the headboard. Cass crawls after him, her movements graceful and languid like a predator. Jason, eyes open again, watches her with wide eyes. She straddles Tim’s thighs and twins her arms around his neck, toying with the short hairs at his nape, making him shiver minutely. Tim cups her hips, stroking his thumbs over the v leading to her groin.

“Hi,” he murmurs.

“Hi,” she echoes, mouth twitching. The light in her eyes is dancing with amusement and anticipation. Tim tips his head back as Cass kisses him; mouths moving in perfect sync, tongues slipping and sliding together wetly, neither of them taking more from the other than they’re given. Push and pull—back and forth. A dance Tim thinks both of them were born knowing the steps to.

The headboard creaks. Jason whines pleadingly.

They ignore him.

Tim’s hands smooth up Cass’s rib cage, counting each bone under her skin before palming her breasts. He knows Cass doesn’t usually wear a bra—that the lacy thing cupping them is for their benefit alone. He plays with her nipples through the fabric, enjoying the way she rolls her hips against him in return.

When she nips his tongue, he goes for the band, unhooking it with practiced ease. Cass shrugs it off, tossing it carelessly over her shoulder.

The headboard creaks again as Jason makes a soft, plaintive sound. Tim smiles into Cass’s mouth before she breaks the kiss. This time, it’s her turn. She pays only a little attention to his chest—pinching his nipples until he squirms. Then she focuses on other things, spaces of his body that Tim had never known were sensitive until she found them. His side, his stomach, even spots on his back. Cass works them all while Tim holds onto her hips and moans.

It drives Jason crazy beside them. Tim can hear him squirming. Hear the sweet, needy sounds he makes. Can picture the way tears fall on his cheeks. It would be so easy for him to look over, to see it for himself, but.

Ignoring him while they put on a show will drive him that much crazier. And Tim loves to drive Jason crazy.

Tim’s turn again. He kisses Cass’s neck, using far less teeth than he had on Jason and leaving no marks. His hands roam her body, mapping out the places that make her squirm, make her breathing hitch, make her even moan. It’s always a treat, getting a sound from Cass. She’s so silent. (Tim likes that too, though: reading her pleasure from breath and expression alone.)

They don’t stop until both of them are leaking through their underwear; damp spots where their arousal pools the thickest.

Tim discards his—Cass does the same above him, both of them tossing them carelessly. He turns to Jason again, finally, finding him watching them. He’s just as Tim pictured; face rosy red, tears glistening in his eyes and on his cheeks, hands twisting around the headboard, grip white-knuckled. A pearly pool of precome glitters on his stomach.

Tim strokes his cheek with his knuckles, stopping to cup his jaw, thumb catching over his full bottom lip. Jason’s lips wrap around the tip, suckling., looking up at Tim with wide, pleading eyes.

Tim smiles at him. “Good boy,” he praises. “Being so patient, keeping your hands where I told you… Do you think you can keep being good for me?”

Jason nods, immediately, curls falling into his eyes.

Tim brushes them back to plant a kiss on his forehead. “Of course you can,” he croons. He takes a condom off the bedside table, sitting up. He works his hand over Jason’s cock, gentle, making sure it’s thoroughly coated in pre before he rolls it on. He can hear the way Jason’s breath hitches in anticipation. “You’re gonna stay nice and still, and let her ride you, aren’t you?”

Jason’s breath hitches, and he nods again; quick, sharp jerks. “Yes. Please. Pleasepleaseplease.”

Tim strokes his face, fingertips skimming over his jaw. He looks over at Cass, nodding, giving her the go ahead.

She’s all languid limbs when she climbs over Jason, settling onto his thighs. Tim lies on his side, ignoring his own erection in favor of propping his head up with one hand, and trailing the other over Jason’s chest, twirling his fingertips through the wiry curls.

Cass wraps her hand around Jason’s cock—looking pale and small against his cock. The contrast makes his fingers itch for a camera. She rubs the tip through her folds, eyes heavy-lidded, mouth parted.

The headboard jerks under Jason’s grip, knocking against the wall. Tim kisses his jaw. Cass teases Jason for a moment more—Tim can see her eyes glittering under her lashes, the twitch at her mouth that shows just how much she’s enjoying the sounds Jason makes.

And then…

Cass slams down, taking Jason to the root with a single thrust.

He shouts—Tim is half worried the headboard is going to snap under his hands. It doesn’t. Instead, it slams back against the wall again; a loud sound that makes him glad he doesn’t have neighbors. Jason’s chest heaves, his arms shake.

Cass sets a hard, brutal pace. Tim can barely hear her soft grunts under Jason’s cries. She switches back and forth between riding him and grinding on him, rubbing her clit against him. Fat tears roll down Jason’s face; his skin is flushed from head to chest. His tongue lolls out of his mouth—Tim can’t resist plunging two fingers between his lips.

He’s rewarded by Jason sucking; cheeks hollowing, swallowing around them. Tim pets his tongue idly, turning back to watch Cass.

He can tell the moment she comes—clamping tight around Jason’s cock, her movements stilling. Jason lets out a strangled cry, teeth grazing over Tim's skin. Cass's head tips back, chest thrust forward. She still looks so composed; only a slight flush on her skin; the barest sheen of sweat.

She isn't still for long. Bending backwards, reaching for the remote at the foot of the bed. Jason’s brow furrows in confusion at the sight of it—until she presses the button, and the plug in his ass buzzes to life. Jason’s breath hitches. He whines needily around Tim’s fingers. He pumps them, fucking Jason’s mouth properly, watching the way his eyelids droop. He pants, breath hot and humid.

Tim brushes his mouth against Jason’s ear. “Such a good boy, letting her use you like this,” he whispers. “Letting her use that pretty cock of yours to make herself come. A sweet little toy for her.”

Jason moans around his fingers, shivering, looking up at Tim through his lashes. His sucks turn more insistent, and Tim chuckles. “Do you need something more in your mouth, baby?” 

Jason whines, nodding. Tim drags himself back up, moving until Jason’s head and shoulders are pillowed on his legs. He takes his fingers, wiping them on Jason’s cheek. He feeds Jason his cock.

Tim will never tire of Jason’s mouth. His body is a furnace, running a few degrees hotter than everyone else’s. He feels molten and soft around Tim’s flesh, and when he sucks—

Stars dance in Tim’s eyes.

He pets Jason’s face, deepening his breaths to try and keep them even. Jason moans, whines, cries around Tim’s cock—but he never, ever stops sucking and licking, doing his best to bob his head, and staring up at Tim, hazy-eyed and adoring. He soaks up ever stroke of Tim's hand like he's starving for it.

If Tim was even a fraction less horny it would make his heart ache. As it is—he just gets harder, belly tight and hot.

He's nearly undone when Cass comes again—Jason's mouth tightening around him, moaning long and low, the sound vibrating around his cock.

Tim reaches out with his other hand—Cass takes it, tangling their fingers together. She’s showing signs of exertion now, sweat glittering and glistening on her skin. As beautiful now as she is on stage, arms raised in a perfect pirouette.

She squeezes Tim’s hand.

Tim squeezes back. He taps Jason’s cheek with the other, getting his attention. “You’re going to make Cass come one more time, baby,” he says. “And then you get a reward, alright?”

Jason hums, blinking slowly up at him in acknowledgement. His lashes are clumped with tears, eyes rimmed with red. Tim strokes a finger down the line of his nose, over his bulging cheek.

Cass’s pace is slower this time—her hips rolling. Her breaths quicken, quiet moans tumbling from her mouth. The movements of Jason’s mouth grow clumsier; too focused on Cass. Tim doesn’t mind. He is too.

When Cass’s stomach starts to tighten, the muscles flexing, showing off her abs, Tim lets go of her hand, rising up a little to pull her into a kiss over Jason’s head. He hears, feels, Jason groans—the vibrations make him moan. A particularly hard thrust has Cass tensing, then coming with a sigh, melting against Tim’s mouth.

She pats his cheek when she pulls away, smiling at him, eyes hazy and face pink, looking far more relaxed than when they started. Tim smiles to see it. She slips off of Jason, resting on his other side, curling her legs under her. 

Tim eases his cock from Jason’s mouth—when he whimpers, Cass replaces it with her fingers. Jason’s eyes blow wide in surprise, and then he sucks eagerly. Cass smiles down at him.

Tim settles between his legs, cupping his balls lifting them as if he's testing the weight of them before making a low, sympathetic noise. "Aw, poor baby. You're so full. I bet it hurts, doesn't it?"

Jason whines around Cass’s fingers. Tim is sure he would be begging to come if he could speak—especially when Tim rolls them in his palm, rubbing them with his fingertips. Jason thrashes his head, his hips moving in short, aborted jerks as he tries to stay still, like Tim asked.

“What do you think, Cass?” Tim asks, contemplatively. “Has he earned it?”

Cass hums, her mouth quirking on one side. “Hasn’t made you come yet,” she points out, to Jason’s distress. Idly, she starts circling one of his nipples with her free hand. Tim watches his chest jerk, both up and away.

Tim lets his eyes widen, pretending surprise. “You’re right. He hasn’t. That’s not really fair, is it Jay?” he asks, and Jason whines, pouting around Cass’s fingers. He’s so cute, with his curls falling into those big, pleading eyes, glassy with lust and tears.

Ignoring him, Tim hums contemplatively. “Although... I did promise him a reward for making you come again." He pets Jason's thigh, cocking his head like he's thinking. “Hm… I suppose for your reward, darling, I’ll take this off for you.” Tim eases the cock ring from him, and lets it fall on the bed beside them. “But if you want to come…” He grabs the base of the plug, Cass turning it off as pulls it out. “You’re going to have to do it on my cock. Think you can do that?”

Jason nods, frantically. His cheeks have hollowed, and Tim knows he’s got to be sucking Cass’s fingers like a champ. He can see her moving slightly, probably petting his tongue.

Tim lets the plug drop on the bed with the cock ring. He grabs the lube again. Hisses at the cold liquid on his heated flesh before he strokes himself, smearing it everywhere. He doesn’t bother with a condom; just lines himself up with Jason’s hole, lifting up one of Jason’s legs and pushing it toward his chest. 

With one snap of his hips, he buries himself to the hilt.

Jason sobs. His cock and balls twitch, a spurt of precome splattering on his skin. He tightens beautifully around Tim, making him snarl at the tight, wet heat of him.

Cass hums, watching with dark eyes. She presses her mouth against Jason’s temple and whispers, just loud enough for Tim to hear, “Beautiful.”

The praise makes Jason shake, sobbing again. Cass brushes hair from his forehead, looking from him to Tim, clear approval in her eyes. Keep him, she tells him silently, without so much as moving her lips.

I intend to, Tim says back, snapping his hips again. Jason keens.

Cass keeps petting Jason, touch firm and soothing, letting him suck on her fingers as Tim fucks him. He uses the same pace as Cass, right at the very start. Hard and punishing, slowing occasionally to roll his hips, angling for Jason’s prostate.

It doesn’t take very long at all for Jason to come. Especially not when Cass starts teasing his tit again—scraping a nail over his tight, puckered nipple.

Tim has to hold his hips and Cass his shoulders to keep him from arching completely off the bed, mouth hanging open in a silent shout. He paints his own chest with come—Tim helps him, massaging his balls and perineum while fucking him shallowly.

When Jason collapses, he looks half passed out. 

Tim pets his flanks, giving both of them a moment to catch their breaths and then... he keeps going, chasing his own bliss in the tight heat of Jason's body.

Cass drags three fingers through Jason’s come—examines them curiously, tilting them in the light. Then, she slips her fingers from Jason's mouth, holding up the ones covered in his come instead. Jason swallows them down without hesitation, moaning when he tastes himself on her fingers, and that—

That’s when Tim spills, deep inside him. He feels Jason shudder, hears his quiet moan, feels the way he clenches around him. He clenches tighter when Tim pulls out, as if he can hold him inside, but Tim ignores him. A line of come follows his cock; Tim scoops it up with his fingers, stuffs it back inside, using them to keep him plugged while he snags the plug. He uses his come to slick the plug before working back inside him. As soon as it's settled, Jason sighs sweetly, relaxing back against the mattress, suckling contentedly on Cass's fingers.

Tim crawls up to the headboard, settling down on Jason's other side. He strokes Jason's cheek. "You can let go of the headboard now, sweetheart," he whispers. Jason blinks up at him. It takes him a second to comply, and when he does, it's slow, finger-by-finger before he lowers his arms. Cass slips her fingers from his mouth, then; she and Tim each taking one of his arms, massaging them. Jason hums, low and rumbly like a purr.

Tim raises Jason's hand to his mouth, turning it to kiss his palm before threading their fingers together. "Very well done, sweetheart. You were so good for us, thank you."

Jason shivers, blinking sleepily at him, a little smile on his mouth.

Cass sweeps Jason's bangs from his face again so she can kiss his forehead. "Good boy," she tells him when she comes back up. Jason blinks at her, wide-eyed with surprise. Then he flushes, smiling shyly at her. She smiles back, sweetly, patting his cheek before leaning over him.

Tim meets her halfway, sighing into her slow, languid kiss.