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weirdworldofwinnie · 9 months

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Heat of the Moment - One Night Passion

Cillian Murphy as J. Robert Oppenheimer x Female Reader NSFW 18+ only, One shot

Summary: You, a young psychology student and friend of Jean Tatlock, drink a little too much at a Communist gathering and find yourself falling for the esteemed Dr. Oppenheimer himself.

Word Count: 3,830

Warnings: Age gap, Cheating, Drunkenness, Loss of virginity, Unprotected sex, Smut with little plot

Disclaimer: this is ONLY intended to be based on Cillian Murphy's portrayal of Oppenheimer in the film and takes place before he marries Kitty, moves to Los Alamos, and the development of the Trinity Test bomb. NOT historically or scientifically accurate and not supposed to be in support of the real man's life actions at all. DNI if you are uncomfortable or take issue with this. It is purely for entertainment purposes, and it is fantasy/fiction!

The party was brimming with people, many being prominent due-payers of the Communist party and you met your friend Jean's eye across the room through the warm glow and haze of cigarettes. She was standing with a few men and one woman as you approached, noticing one well dressed man in particular who had his back to you and you felt your heart involuntarily stutter when he turned, his wide strikingly blue eyes on you intensely. You swallowed and then Jean introduced you and he simply nodded with an amicable smile before turning back to the others in their discussion huddle. You were at bit surprised at his dismissiveness, but didn't take it too personally as you drifted over to get a drink from the bar area. Holding a full cocktail glass, you casually observed the room, noticing at once how Dr. Oppenheimer had one of those magnetic personalities, as long as you were an intellectual (although he was a good enough speaker that he could capture the attention of the common man and likely even someone who knew absolutely nothing about physics), yet at the same time he tended to eclipse everyone else around him. They all seemed to orbit around him in a fashion and the longer the night drew on, you too found yourself drawn to his quiet charisma and you now were seeing what Jean saw in him. After an hour of drinking and mingling around in various conversations, you mustered up the nerve to approach his ring again and stood next to your friend with only a couple other people you didn't know chatting to him about his teaching at Berkeley. He glanced at you, his eyes lighting with more interest than the initial impression.

"Hello again, Miss Y/N. Excuse me," he told the others and moved, breaking their circle to focus on you alone.

"Would you like a drink?" he asked politely but without waiting for an answer, he went to personally make a martini himself and then pour it into a crystal glass, topping it with a slice of lime. You were empty handed at the moment, but neglected to tell him you'd already had two glasses of alcohol already. He gave the filled glass to you, his fingers brushing your wrist as he did and you thanked him as he leaned against the counter with his own drink that almost mirrored yours.

"It's my preferential recipe. Do you like it?" he asked curiously as you drank and decided it tasted a bit bitter and tangy, so you just raised your eyebrows and smiled assuredly with what you thought was a convincing nod, however, he must have seen otherwise.

"Too bitter, isn't it? I'm working on it; it would probably be better off with a dash of honey." He raised his glass and suddenly swapped it with yours, taking a sip and giving a satisfied expression.

"Hmm, right. I'll remedy it and I do apologize, I was actually just testing you there for your opinion. I'll have this one, you enjoy mine instead."

Unsure of whether you should be flattered or not, you drank his original and it was more appeasing of your sweet tooth, and then he proceeded to ask you about what you were currently studying and how long you knew Jean.

You gave him simple answers at first, feeling a bit shy and guarded compared to the spotlight he projected. He was far from being a loud, obnoxious man but he wasn't timid in the slightest when it came knowledge and he gave off an air of aloofness and professionalism that slowly broke the more you opened up about psychology and politics while making it clear to him you considered yourself a somewhat free spirit trying to make your way in a predominantly male run world. It was refreshing to you that he actually sincerely listened and wasn't too condescending like other men you had encountered in the field.

"Interesting. Have you considered applying that to a career for the future, I assume you are aiming for a psychology degree? Or is it a base point to advance you into becoming a psychiatrist? I'm sure you would be able use medicine in addition to your Freudian theories to mitigate such deep mental issues."

"Well, to tell you the truth, I'm only my second year in for psychology and I doubt my father will pay for addition schooling on top of that, but theoretically yes, I would love to. It's my passion and I have a prudent desire to assist others, not just study them under a detached microscopic lens, so to speak. I want to help people understand who they are and I myself want to understand why their brains work the way that they do. And if some disorders could be cured with certain drugs when all else fails, I would consider that a great accomplishment for humanitarian progress."

"That certainly is a valuable asset, to understand one's self, and especially in this rapidly complicated changing world and the more we have a stronger grasp of the human mind, the better off we will be I suppose. But remember, to know is to do. Theory will only take you so far."

You nodded, soaking that in and taking an ample sip from the drink, which was spurring you on in confidence, so you began to ramble on about the damaging psychological impacts of war before jumping to the effects of practical versus ideological Communism on modern society... at least until a young man interrupted, joining the two of you for a while and you let Oppenheimer divert his attention to him instead as they delved into more physics, which you honestly only had a basic understanding of. You drained down the rest of the martini, refilling it with a simple gin instead to sip more than you should and you definitely were feeling tipsy as the evening wore on to a close, hovering by Oppenheimer's side constantly and perhaps even unconsciously flirting while ignoring Jean's stares from several feet away. He wasn't paying attention at the moment, so you turned to set down your empty glass, but stumbled into a stool on the way. You spun around, feeling Dr. Oppenheimer place a hand on your shoulder, steadying you.

"Perhaps you should retire for the night," he advised softly, close to your ear.

"No… I'm fine," you insisted, the heat rising to your cheeks as he took your shaky hand and you caught Jean giving you one last glare before she disappeared into a murky corner of the room. You looked back to him staring at you concernedly and you blinked as he spoke quietly.

"There, now where are you staying? Surely it can't be far, I'll take you home."

"N-No, my apartment's the next town over and you don't have to, I-I think I'll be okay..." you stammered absurdly and wavered on your feet, not the least bit sober. He changed direction, pivoting to catch you under your arms, and propping you up straighter.

"I believe there is a spare bedroom upstairs, I'll take you to it." Without another word, he led you out of the room and tottering up creaky stairs that led to an upper floor. A few doors down, he took you into an empty small stuffy room with a single queen bed. As you collapsed onto it, sighing deeply after a hiccup, he brushed aside the beige curtains and opened the window, letting the cool night air flicker through.

"Stay here, I'll be right back with some water," he said and exited for a few minutes, coming back shortly with two glasses of water in his hands, one for himself that he took a careful gulp from and you found yourself wondering if his mouth was dry or if he could be nervous. You accepted your cold glass and drank, washing down the strong mix of cocktails and gin taste from your tongue.

"A bit better?" he asked kindly, getting a nod in return as he took the glass from you and set it down on the bedside table next to his own. You watched as he stepped over and stood in front of the window, rustling the curtains. He stayed still there for a while in a pondering pose, smoking and staring out at the street below, presumably lost in thought as he often was. You made a sort of groaning noise and he turned, hand on his hip with a raise of his eyebrows.

"Are you going to be sick? Should I call for someone?"

"No!" you gasped, sitting up with a swirl of the room as he strode over to the door. You did not need your parents to find out about this, especially your father.

"Wait - Please don't leave," you begged and he hesitantly came over, abandoning his cigarette in the ash tray on the nightstand next to the glasses of water and sitting down, getting a good look at your bloodshot eyes and tousled hair, a few strands obscuring your vision. He gently took his hand and wiped the hairs off to the side of your face, his touch on your flushed cheek sending shivers up your spine. He leaned back, putting his hands on his knees and you let out a shaky breath, trying to reorient.

"Have you ever drank before?" he inquired knowingly and you laughed weakly.

"Of course I have."

"I'm afraid that you overdid it this time or otherwise you must have a low tolerance. I only offered you one drink after all." He held up his right hand, splaying his fingers apart.

"How many do you see?" he asked seriously and you only giggled, pushing his hand down.

"Five, maybe six? I feel finnee."

He shook his head, maybe amused, and you had the impulse to climb onto his lap, so you began to slide over, swinging your legs and scooting halfway onto his lap, making him blink in surprise and gasp slightly.

"What are you…?"

You shushed him and wrapped your arms seductively around his neck, resting your head on his shoulder with your ruby lips inches from his neck. He put his hand on your back uneasily and you whispered in his ear.

"Could you carry me to the bathroom?"

"I can't - What? Why?"

"I might be sick."

He pushed away, letting you slip off his slender body and sitting back onto the sheets with a light laugh.

"I think you should lie down again," he said firmly and you flumped your head onto the pillows, your face burning as he stood up, moving around to tug your feet out of your heels and then his hand caught, wrapping his fingers around your ankle and sending a sensation up your legs. You tilted forward, reading his oddly grim expression.

"What is it?"

"I should leave," he murmured, tossing the shoes to the floor and removing his hand reluctantly.

"You don't have to," you told him earnestly, struggling to grasp for him as he stayed at the end of the bed.

"You aren't in a normal state of mind, I'm afraid."

"Are you?"

"Not as much as I should be," he admitted with a sigh, knowing it would be inappropriate to sleep with Jean's friend that he had just met and it was unknown if you had a boyfriend or not.

"Well, I doon't caaare…" you slurred out and he went to sit on the bed next to you as you shifted, sitting up with your elbows. Dr. Oppenheimer gazed fondly and then you both began to instinctively lean into each other, his nose meeting yours and he tilted his head, giving you the incentive to lock lips and slide your tongue into his mouth, letting him reciprocate slowly until both parties pulled away, you panting excitedly.

This seemed to cause a chain reaction that had him scooting over closely so he was fully on the bed, loping his arms around at your back and you tugged at his black tie, wrestling with undoing it as he let go of you to shrug off his suit jacket and discard it, his breathing quickening. He slipped off his shoes and socks, dropping them over the bed with a clump before his fingers found the zipper on the back of your dress and he fumbled, forcing it down and letting it pool off your body to the sheets, running a hand over your bare skin. Pausing slightly with his hands nearing to unfastening your bra, he murmured urgently.

"Don't tell Jean about this."

"But she's my friend," you protested loudly and he put a finger to your lips with a 'shh' that made your heart palpitate.

"I don't want her to find out the hard way."

"She… She'll figure it out, right?"

"She may, but I don't want it to come from you. This is all my doing, I'll take the responsibility for my own actions, do you understand?"

"Oh yes, I do Mister J. Robert 'Oppie' Oppenheimer… What's the J stand for anyway?"

"Nothing important," he replied shortly and you reached to feel his bottom lip, smiling in curiosity.

"C'mon, tell me. Is it John, James, Joe...?"

He shook his head, closing his eyes and you laughed, tracing his defined cheekbones with your fingers.

"It's Julius," he admitted almost sheepishly and you cocked your head, cupping his chin.

"As in Julius Caesar?"

He wet his lips, the corners of his mouth twitching in annoyed amusement.

"Et tu, Miss Y/N?" He paused for a fraction of a second with a light sigh.

"Just call me Robert," he then told you and leaned in to kiss you again, caressing the sides of your face as he did so and you eagerly wound your tongue with his, passionately pressing into his face. He smelled heady; smoky and of aftershave mixed with some brand of cologne, not overpowering but enough to be noticed and mildly sting your nostrils when you went to mouth his neck.

He moved to hover over you, hands grazing your nearly naked body. You let him take the bra and he flung it over his shoulder to the floor and all that was left was your panties. You unbuttoned his light blue dress shirt and opened it up, stroking the light hairs on his chest as he fingered your panties, the last barrier to whatever was going to come into effect. Robert ran a single finger up along your abdomen and past to one of your breasts, circling the nipple and it hardened substantially at the stimulation, which he transferred over to the other one, teasingly fingering back and forth before he sank his face into your chest, his tongue trailing where his fingers had been and you whined, letting the budding arousal take you higher. Then he retracted his mouth, moving back and going to himself, unbuckling his belt and unzipping his pants, popping them open to reveal boxers concealing his burgeoning, bulging cock with tightening testicles. He wriggled out of his pants, kicking them away to hang off the side of the bed and he leaned over, coming to hover on top of you and you felt the pressing of the underwear fabric hiding his growing penis, and you felt inclined to slide your hands down to grope it, fingers yanking at the band around his waist.

"Go ahead, take it," he encouraged and you pulled the boxers down, seeing he was already dripping with precum and your breath came in pants, anxious to feel him, but the rational part of your alcohol tainted brain was reminding you that you'd never taken it this far with a man before. He shifted, supporting himself by pressing his palms to the cream colored plump pillow behind your head and immediately settling over to align. You felt him trying to enter, your clitoris throbbing with anticipation, but he wasn't successful at first of getting in.

"God, you are too tight," he muttered and you froze, staring up at him as Robert now realized the exact nature of you.

"First time ever?" he asked with trepidation and you nodded somewhat shamefully, embarrassed. It wasn't like you hadn't been with men before, but this was the first for it to get this far with full-on penetration. He closed his eyes for a second, controlling his patience for he wanted so desperately to come inside of you, but he had to ask.

"How old are you?"

"I - Is that important?"

"Just please tell me you're at least 21 and don't lie about it."

"Yes, I'm over 21."

"Alright. Well, there's a first time for everything. I'll go slower."

He shimmied down your naked body until his head was at your vagina and he put his hands up on your stomach, massaging vigorously into your skin, eliciting a tiny happy moan. You never felt this aroused around anyone before and just his hands on any part of your body was pleasurable, so you hoisted your hips up to meet his touch. But then he stopped abruptly, displaying two fingers and you squinted, body aching for more.

"How many I am holding up now?" he asked and a delirious giggle erupted from you.

"T-Two."

"Correct," he praised and promptly slid them up into your moist entry, causing you to cringe painfully and make a noise that made you clamp your own hand over your mouth, afraid the people downstairs might hear.

"How is that? Okay?" he asked in a hushed voice, anxious to go further and you just nodded, taking deep breaths.

You were now getting so wet and he started pumping his fingers in and out, eventually gaining traction with three in and you were whimpering and moaning, so close to orgasming when he pulled them all out and sat back on his haunches, his tongue flicking across his lips in a kind of hunger.

"Don't stop," you pleaded and Robert's eyes were dilated with desire as he came down, burrowing his head in-between your thighs, gripping your legs and kissing your pussy before lifting his head and looking at you squarely.

"Oh, I won't."

Without further ado, he repositioned himself over you and slowly pushed in, his cock breaking at your walls. You moaned, the pleasure outweighing the sharp pain and you clenched around his shaft, letting him penetrate as far as he could go into your core. Within moments, you let the orgasm ripple through you as he kept at it, coming to his own climax that wasn't going to be outside of you.

"Fuck, this feels good..." you breathed, rubbing your palms on Robert's short cut dark hair and he couldn't hold back any longer... exploding with his own euphoria, emitting a primal grunt that became a loud gasp. He pulled out wetly a few moments later, shuddering from the exertion and you reeled in what had just happened. You just had intercourse with this brilliant man… Oh God. And you didn't want it to stop; you weren't done yet.

You rolled over so you were on top of his body now and you carefully settled down so you were sitting on his upright swollen cock and the rubbing of it against your clit was making you close to orgasming for the second time.

"Stop," he gasped suddenly, trying to push you away.

"W-Why?"

"That's how she does it." He frowned, licking his lips and you didn't have to ask to know who he was talking about.

"Do you… like it?"

"Yes, of course, but-"

"Then I'm doing it, it feels good for me too," you told him with no arguments allowed and both of you began to rock back and forth, his still hardened dick pushing up against your vagina. He thrusted in again and you groaned, quivering.

"Oh, good girl," he whispered and you almost lost it at the tone of his slightly husky voice. You certainly never got that from the few men you'd courted briefly that had turned out to be too immature or pigheaded. This man actually felt like a real decent, more experienced man.

"Robert...!" you squealed, letting the boom of climaxing implode inside of you. You leaned back, letting him slide out and you gripped his slick dick mixed with fluids from both you and him, your nails very gently stroking it as he smiled, throwing his head back against the pillow in relaxation and pure joy.

You orgasmed a couple more times after that, each nearly as strong as the last which was new to you. What the hell was it about Robert that made your libido go off the charts?

Finally the two of you collapsed back together, staring up at the ceiling above in ecstasy. His chest was rising and falling in rhythm with yours and gradually your body cooled down, though your face still felt hot and a dull headache was coming on, but the night breeze from the window was making goosebumps pepper up on your skin.

"Cold?" Robert asked softly, noticing.

"Mm-hmm."

He sat up and grabbed his wrinkled boxers before deftly swinging a leg out of bed, getting up to the floor and yanking them back on. He also hastily snatched up his pants and slid back into them, not bothering to zip or buckle as he went over to the window and peered out once more at the street, then firmly shut it, closing the curtains securely and heading back over to the bed, lifting a corner of the sheets up and crawling in next to your bare body.

You scooted under the sheets and cuddled into his slim side, playfully fiddling with a button on his open shirt and letting him wrap an arm around you as you dozed off, listening to the faint ticking of his wristwatch, feeling utterly fucked out and exhausted. He fought his own fatigue, considering getting up and leaving you in case someone found the two of you up here, lest it be Jean, but you felt so cozy and close, he couldn't bear to disconnect and leave you alone for the night.

He wasn't entirely sure what would become of this drunken rendezvous encounter that you may not remember entirely, knowing very well it was likely he may never find himself loving you like this again. He loved Jean, he very much did, but he wondered if you would accept his flowers as easily as you had accepted his sex? Jean was most definitely a complicated, intelligent woman and he wasn't sure if you were in the same vein as her, but it wouldn't surprise him if you were. Was he drawn to any other type, really? Women were fascinating to explore, a close second to the hidden world of quantum physics.

Robert studied your pretty sleeping features in the dim lighting and then closed his eyes, letting the orange aura of the room drift the both of you away far off into nothingness…

(Thanks for reading and if you really liked this, please let me know! I'm rather new to Cillian Murphy and not well versed at all in writing one of his characters with smut, but there was just something I found so attractively compelling about him as Oppenheimer especially, so maybe this is a bit self-indulgent, but he's such a great actor that is also very sexy of course.❤️)

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