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Naughty Girl

Summary:

Nesta sends Cassian a cheeky text message while he's working

There's no real plot, this is just straight filth

Notes:

Forgive me, Father, I have sinned...

This is the absolute filthiest smut I have ever written, all 4,000 words of it. There's not even any plot. The only plot is that Nesta and Cassian are together. Are they married? Are they just in a relationship? You get to decide! But we're celebrating Day 4 of sjmromanceweek with truly everyone's favorite trope: PWP ;)

I'd like to dedicate this to the GC and my favorite enablers who encouraged me to finally release this into the wild and the 54 people who voted in my poll for this.

I hope you enjoy, but maybe not in public, this very very very NSFW fic

(See the end of the work for more notes.)

Work Text:

The notification going off on his phone is loud in the otherwise quiet office, the sound practically blaring over the shuffle of papers, the glide of his pen. It's jarring enough that Cassian has to blink a few times as he's pulled from his haze of focus. He knows he should ignore it, that whoever is texting him can wait, but there's no denying the way his fingers have started to cramp, the way his eyes have started to ache from reading page after page of black ink spilled across white paper.

With a soft sigh, Cassian scrubs a hand down his face and digs his phone out from beneath the stacks. He frowns when he sees Nesta's name displayed across the screen. She knows he's busy with this endless stream of reports from Rhys, knows he's practically locked himself in the office of their house until they're completed. It's not like her to interrupt him. He expected her to appreciate the peace and quiet to relax and read her book all day.

Perhaps something is wrong?

But if something was truly wrong, why wouldn't she call him? Hell, why wouldn't she knock on the office door?

Suddenly feeling quite anxious, Cassian quickly types in his passcode, thumbing open his text message chain with Nesta. The anxiety quickly morphs back to confusion at the three word message waiting for him.

I'm so lonely

Cassian reads it once. Twice. His brow furrows as he tries to figure out what that means, why she texted that message to him when he's in the middle of these reports. He starts to type out just that question back to her, but she must have seen he'd read her first message because before he can finish, a second message comes through.

This one is a picture.

There's no mistaking the navy blue sheets of their bed, no mistaking the dark wood of their headboard in the top part of the frame. But it's the center of the photo, the focus of it, that has Cassian almost swallowing his tongue, a choked off sound escaping from his throat.

Golden brown hair cascades across the pillow like waves of burnished gold. The strands frame a face tipped back, pink dusting high along the cheeks. Cassian's eyes follow that pink, that flush, across milky smooth skin down and down until it vanishes beneath the red lace covering Nesta's chest. His favorite color. His gaze keeps going down and down, but the photo cuts off what he's really hoping to see. Still, the implication is clear with the way Nesta's arm is positioned, her hand clearly buried between her legs off frame.

Cassian tries to clear his throat, tries to swallow, but suddenly, his throat is too dry. Already, he can feel himself growing hard, and he reaches a hand down to readjust himself in his sweatpants. He knows he needs to get back to his work, needs to refocus on the task at hand, but he can't stop staring at that damned photo.

As if the ache between his legs isn't enough, his hands seem to ache too. Ache to glide along those miles and miles of skin. Ache to be filled with her breasts, to squeeze until they're spilling out of that red, lacy bra, so he can get his mouth on them. Fuck, he wants to get his mouth on all of her. Trace the line of her neck, biting bruises into the skin there that won't fade for days. Taste the fingers of her hand hidden from the photo then drink directly from the source.

A third text message comes in, and Cassian's resolve finally snaps.

Won't you help me, daddy?

Cassian quickly types out his response, pressing send and waiting. It takes less than a minute before he hears the shuffling of feet outside the door, the creak of wood as it's pushed open. Nesta struts into his office, and Cassian gets to see the outfit in all its glory in person. The red, lacy bra cradles her breasts, pushing them up and on full display. The matching lace panties sit high on her hips, and Cassian already knows the cut of them show off her ass without even seeing it.

Cassian stays seated in his office chair, his eyes tracking her every movement. Nesta walks in with a wide smirk, twirling a strand of her hair almost innocently. A wolf in sheep's clothing indeed. She looks every bit like she's won, like the cat that got the cream, but as she takes in Cassian's expression, the smirk starts to slip. Cassian would be concerned if the blues of her eyes didn't flare and blaze in excitement. She knows exactly how this game goes.

"And what did you think you were doing?" Cassian asks, keeping his voice low but calm. "Sending me that photo?"

"I told you," Nesta offers, stepping around the desk and closer to him, sliding a finger along his collarbones. "I was feeling lonely."

"I have to finish these reports," Cassian reminds her, shifting his office chair back enough that he can pull Nesta onto his lap, that she can feel the effect she had on him pressing up against her. "And you ruined my concentration. How am I supposed to work after that?"

"I'm sorry."

"I don't think you're sorry at all."

"Maybe I'm not," Nesta agrees, peering up at him from under her lashes and grinding down against his lap. Cassian tightens his grip on her hips, pausing the movement, and Nesta lets out a quiet whine.

"How very naughty of you, Nes. And here I thought you were daddy's good girl."

"I am good."

"Really? That's not what your little photo suggests. You know good girls don't come without permission."

"But I didn't come," Nesta protests, shifting her hips again as if to prove her point, prove her neediness. "I was waiting for you."

Cassian hums but he doesn't say anything more. He slides his hands down along Nesta's hips and back until he can grasp at her ass, kneading it. Nesta's eyes flutter closed at the gesture, a soft gasp falling from her lips and her arms tightening around his shoulders. Cassian leans in, sliding his nose along the underside of her jaw before following the same path with his lips.

He blazes a trail all the way to her ear, whispering, "you want to play, Nes?" This close together, he can hear the way her breath hitches in her lungs, can feel the way she dips her chin in a nod. "Use your words, baby."

"Yes," Nesta breathes before he even finishes speaking.

"I think we need to see if you can really be my good girl," Cassian offers, nipping at her ear until Nesta is shuddering in his arms. "I think you should warm daddy's cock until he's finished his reports."

Nesta lets out another whine, this one high pitched and seemingly pulled right from the back of her throat. Her head tips forward as she buries her face in the crook of his neck, her lips skating across his skin, and Cassian has to swallow a groan of his own.

"Are you going to be my good girl?" Cassian murmurs into her hair.

"Yes," Nesta repeats, lifting her head up and leaning in for a kiss.

Cassian slots their lips together, slipping his fingers through the strands of her hair and tilting her head how he likes it, so he can press his tongue into her mouth. She moans into the kiss, and Cassian can feel his resolve starting to slip, finds himself tempted to say fuck it to his original plan. Nesta is intoxicating. The softness of her lips against his. The way she tastes. Having her pliant in his arms. He could do this all day. He could get lost in her all day.

Reluctantly, Cassian breaks the kiss and pulls away, but he continues to stare at her. Her mouth is parted still, lips kiss bitten and swollen. Her eyes are still closed, long eyelashes kissing her cheeks. And those cheeks are flushed such a pretty shade of pink, one that matches the flush of her still heaving chest.

She's truly the most beautiful woman Cassian has ever seen and she's all his.

How did he get so lucky again?

Nesta lets Cassian maneuver her off his lap, so she's standing in front of him. He slides his hands down along her ribcage, over her waist, her hips. He toys with the waistband of her panties before leaving them be, instead following the line of fabric between her legs and pulling it aside. He teases his fingers between her folds, feather light touches that have Nesta pressing down against his hand desperately. He chuckles at the reaction, slipping two fingers into her, but it quickly turns into a groan when he's met with no resistance.

"Already so wet and ready for me, baby?" Cassian asks, curling his fingers just right. "You're absolutely soaked."

"Cass," Nesta gasps out around a moan. "Daddy. Please."

Cassian pulls his fingers free, bringing them up to his mouth and licking them clean. Nesta's gaze tracks the movement, watching him through hooded eyes, and Cassian doesn't even bother biting back his smirk. He shifts enough in his seat that he's able to tug his sweatpants off, never more grateful than today for the comfort of working from home. Nesta licks her lips as soon as his cock springs free, and Cassian gives himself a few strokes before lounging back in the chair, arms resting casually against the armrests.

"Come on, then," Cassian tells her, licking his own lips as his eyes sweep over her frame, every delicious inch all for him and wrapped in a pretty bow. "Come sit on my cock."

Nesta turns around, her back to him, and shuffles back so she can comfortably straddle his legs. She reaches down, and Cassian lets out a hiss as she gives him a cursory stroke, but then she's holding him steady and lowering herself down. Cassian has to bury his groan against her shoulder as her tight heat envelopes him, as she sinks down and down until she's flush against his thighs. He can feel the way she clenches around him, can feel the air stuttering in her lungs where her back is pressed against his chest. It's heaven if there ever is one.

"So perfect for me," Cassian praises, brushing her hair aside and pressing a kiss to the juncture between her shoulder and neck. "My perfect girl."

A soft moan falls from Nesta's lips, and her head falls back against his shoulder, eyes fluttering shut. He can see the little crease between her brows, see the way her bottom lip is caught firmly between her teeth. He knows she's trying hard to concentrate on keeping calm, putting all her focus on being still.

"Now, be a good girl for daddy and don't move."

Cassian reaches forward with his left hand, picking up the report he'd left off at. He keeps his right hand on Nesta's knee, tracing soothing lines back and forth with his thumb. He stays just like that as he goes through each of the remaining reports, but every time he needs his right hand to jot something down, to take notes or circle something, he returns it just a little bit higher on Nesta's thigh. By the time he's on the last report of the stack, his hand is resting right at her hip joint, his thumb just barely brushing against her clit.

Nesta lets out a sound halfway between a moan and whine, clenching around him again before whispering, "how many more?"

"How many more what, baby?" Cassian asks, even though he already knows, not stopping the lazy back and forth motion of his thumb.

"Reports," Nesta huffs quietly, her hips starting to stutter before she stops herself.

"That was the last one."

Nesta's whole body freezes at that. Her eyes snap open, watching as Cassian removes his hands from her, as he neatly stacks all the papers on his desk, as he opens one of the drawers and tucks them away.

"You were so good for me," Cassian tells her, returning his hands to her body and squeezing at her breasts through the thin material of her bra.

"Yeah?" Nesta asks, her voice breathless.

"Yeah. And good girls get rewarded."

Before Nesta can ask or say anything more, Cassian grasps at her waist. He hauls her off him and his lap, spinning her around so he can splay her out on his now empty desk. He slips out of his desk chair and down to his knees, finally reaching up to tug Nesta's panties down and off. Once those are discarded, he curls his hands around Nesta's ankles, sliding up her calves, over her knees, and up her thighs.

"What color, Nes?"

"Green," Nesta assures him, reaching a hand down and burying her fingers in his hair.

"Good girl," Cassian praises, pressing a sweet kiss to her inner thigh before smirking back up at her. "You love seeing me kneel before you, don't you?"

"Yes."

"Think about it all the time?"

"Only sometimes. I think about your cock more."

"Greedy. You just had it," Cassian chastises, nipping at her skin in retaliation. "It's alright. I think about your pretty little cunt all the time. How it feels gripping me. How it tastes."

As if to prove his point, Cassian leans in and licks a long, slow stripe over her. Nesta moans loudly, her hand tightening in his hair. The sensation along with having his face pressed right where he wants to be has Cassian groaning against her. He swirls his tongue over her clit, just the way he knows Nesta likes, before shifting down to fuck his tongue into her. Nesta's thighs start to shake, and he keeps his grip on them firm, holding them open as he continues to lick and devour at his leisure, but all the teasing from before has her close already.

"Please please please," Nesta begs, canting her hips against him. "Please let me come. Please."

Cassian pulls back enough that he can speak, licking his lips and smirking up at her. "You're always so pretty when you beg." He gives another deep lick, relishing in the way Nesta's thighs squeeze against his grip on them, the way her whole body shudders. "You've been so good. My good girl. Come for me, baby. Come all over my face."

Cassian leans back in properly and sucks her clit between his lips. It's all Nesta needs. With a loud, throaty moan, she shatters, yanking on his hair and arching her hips up against him. Cassian continues to work his mouth against her until the shaking subsides, until she lets out a soft whimper at the stimulation. He pulls himself to his feet, cradling Nesta's face in his hands and connecting their lips. Nesta moans into his mouth, pressing her tongue against his and tasting herself. It's way hotter than it has any right to be. She's way hotter than she has any right to be.

Cassian pulls away to press kisses along her jaw, down her neck, to her shoulder. "Color, Nes."

"Green. It's green," Nesta tells him, pulling at his face until he's kissing her again. "I want you now."

"Is that so?" Cassian teases, biting her bottom lip and tugging gently.

"Please. Please fuck me, daddy."

Cassian groans, tugging her off the desk and flipping her around so he can bend her over it. "You know how much I love it when you beg."

He fists his cock in his hand, sliding it teasingly against her slit, against the wetness gathered there from his mouth and her orgasm. He knows he should tease her more, should see how much he can really get her to beg, but he can't wait anymore. He presses his hips forward and sinks back into her.

"Gods, you always feel amazing around me," Cassian groans, thrusting shallowly until he's seated to the hilt. "You were made to take daddy's cock, weren't you?"

"Yes," Nesta moans, pressing her hips back against him.

Cassian takes it for the cue that it is, pulling his hips back and snapping them forward. His hands find purchase on Nesta's hips, holding her steady as he fucks into her hard and fast, the sound of slapping skin quickly filling the small office space, mixing in with the litany of moans from Nesta and him alike.

"Fuck, you take me so well. That's my good girl. Could fuck you like this all day."

He shifts one of his hands to wrap his arm around Nesta's waist, tugging her back flush against his chest and allowing him to fuck her harder and deeper. He reaches his hand into her bra and pulls her breasts free, rolling and tugging her nipples between his fingers. Nesta's moans take on a higher pitch, louder in a way that Cassian's glad they finally moved out that apartment and into this house. His name starts to fall past her lips like some kind of chant, and Cassian can't help but agree with the sentiment, swears he's found religion cradled between Nesta's thighs.

"That's it, baby," Cassian tells her, dropping his forehead against shoulder. "Love hearing you scream my name. Makes me even harder."

Nesta's hand comes up to squeeze at Cassian's wrist, nails scraping to find purchase and her cunt clenching around him tight enough that his hips stuffer for a moment. "Cass—fuck. Don't stop. Right there. Don't stop."

"Close again, already?" Cassian asks, Nesta responding with a half intelligent moan as he keeps snapping his hips into her. It's answer enough, and Cassian raises his hand up to her lips. "Open up, baby."

Nesta parts her lips, and Cassian presses two fingers into her mouth. Nesta moans around them, sucking on them and lathering her tongue between them. When they're good and coated, Cassian pulls his fingers free, sliding his hand down to where they're joined and rubbing tight circles against Nesta's clit.

"Now, be daddy's good girl and come all over my cock," Cassian instructs, his lips pressed right against Nesta's ear.

Nesta arches back against him, crying out hoarsely, as she shatters again. He continue to work his hips and his fingers against her, making sure her release is good and stretched out for her.

"Such a good girl," Cassian praises once Nesta comes back down. "So fucking gorgeous when you come."

Nesta slumps forward against the desk, her chest still heaving with the aftershocks. He can still feel the way she flutters around him, and Cassian groans as he follows her down, pressing his lips soothingly along her shoulder blades, down the top of her spine.

"What color now, baby?" Cassian murmurs against her skin.

"Green. Still green," Nesta pants. "So green."

"Think you can come again, then?" Cassian asks, rocking his hips forward pointedly. "I think you can come again."

Nesta turns to look at him over her shoulder, a pretty pout marring her lips. "I want you to come."

"Is that so?"

"Want you to fill me up. Want to be so full of you, daddy."

Cassian has to squeeze his eyes shut, has to remind himself to breathe, even as a loud, deep groan tears its way straight from his chest. It's exactly what he wants to hear, and she knows it. They both know it. Both know exactly how this game ends.

Cassian takes a deep breath to steady himself and carefully pulls his hips back, slipping out of her. Nesta lets out an adorable whine at the loss, her brow furrowing.

"Shhh, don't worry, baby," Cassian soothes her, turning her back around and hoisting her back onto his desk. "Daddy's going to take care of you. I just want to see your beautiful face."

Nesta wraps her arms around Cassian's shoulders, pulling him into a kiss, and they both moan into each other's mouths as he lines himself back up and slides back home. He grasps Nesta's thighs, securing her legs tightly around his waist before settling his hands on the desk, using it to both steady himself and provide leverage as he fucks back into her with earnest, quickly re-finding a pace that has Nesta keening against him, that has them both moaning.

"My baby wants me to put a baby in her, doesn't she?" Cassian asks, snapping his hips hard and fast. "Wants me to fill her up until she's full of my come?"

"Yes," Nesta shouts, her head tossed back as she moans. "Gods, yes."

"Going to fill you up until you're absolutely dripping. Going to put a baby in you. And then everyone will know you're mine, won't they? There won't be any doubt. They'll all know who this cunt belongs to. Whose cock keeps it full."

Cassian's hips start to stutter, and he knows his own orgasm is looming, glittering just out of reach. He reaches a hand between them, finding Nesta's swollen clit and rubbing it in tight circles while he continues to rock desperately against her.

"You're all mine, baby. Mine to fuck. Mine to keep nice and full of my come. Until your stomach's swollen with my baby. But I need you to come for me again, baby. One more time. I know you can do it. You're my good girl. Come all over daddy's cock again and he'll fill you up."

One last press against her clit, one last snap of his hips, and Nesta finds her release. Her whole body shakes with this one, her lips parting on a near silent scream. She clamps down tight around him, and Cassian barely lasts for a handful more of thrusts before he presses his hips deep and spills inside her.

They both go collapsing against his desk, Nesta's legs still snug around his waist and keeping him close. Cassian rests his forehead against her collarbone, taking a few heaving breaths and trying to bring his heart rate back down to normal. He can feel her own heart beat racing away where they're pressed together, two souls thrumming in time. It has him smiling softly against her skin.

He's not sure how long they stay like that before he pushes himself up onto his forearms. He reaches a hand up and brushes the sweaty strands of Nesta's hair away from her face, trailing his fingers down along her temple, her cheek. Her eyes flutter closed at the gesture, and Cassian shifts his hand so his palm is cradling her jaw, leaning in and pressing a sweet kiss to her lips.

"All good?" Cassian asks when he pulls away.

Nesta pulls him in for another kiss, a happy, sated smile on her lips. "More than good."

Cassian chuckles softly, grinning as well. "We should probably clean ourselves up."

He scoops Nesta up properly into his arms, carrying her out of the office and down the hall to the bathroom. He sets her down on the lip of the tub, leaving her to clean herself up while he does the same. He steps over to their adjoining closet after he's finished, slipping on a fresh pair of sweatpants and grabbing one of his tees.

When he steps back into the bathroom, he tugs the tee over Nesta's head. She smiles up at him as she slips her hands through the sleeves, standing up and going up onto her toes to kiss him. She tries to step back after, but Cassian snags his arms around her waist, keeping her close. He leans in and kisses her again, soft and languid.

"I love you," Cassian murmurs against her lips.

Nesta lets out a quiet huff of amusement, the twinkle in her blue eyes betraying her. "I love you too."

Cassian reaches down to grasp at Nesta's thighs, hauling her back up and into his arms. She lets out a squeal of surprise, her own arms quickly locking around his neck, but soon she's laughing at his antics. His favorite sound. It has warmth pooling in his chest and flooding his veins, his grin wide enough his cheeks start to ache.

He carries Nesta into their room, gently tossing her onto the bed before diving right in beside her and pulling the blankets over them both. He wastes no time tugging her back into his arms, burying his face into her hair and breathing her in.

"I didn't ruin your work, did I?" Nesta asks after a few moments of silence, shifting slightly so she can peer at him over her shoulder.

"No," Cassian assures her, pressing a kiss to the skin peeking out from her collar, his tee oversized on her frame. "If anything, you gave me the motivation to finally get all those reports done."

"Good," Nesta says, laying her head back down comfortably against the pillow. She settles her arm over Cassian's that's wrapped securely around her waist, slotting their fingers together. "So, you're done working for today?"

"All done working. I'm all yours for the rest of the day, baby. And I vote that we take a nap, order food from that Thai place you love, then go for round two."

"Now, that sounds like a perfect plan."

Notes:

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