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The Foundation (of a Fucking Messy Love Story)

Summary:

Billionaire tech entrepreneur Jaime Lannister thinks fashion week is a pretentious circus—until he meets Margaery Tyrell and kicks off a no-strings, filthy affair. It’s all good fun until they crash a pub celebration for Sansa Stark’s fashion degree and Margaery ditches him for her brother Robb. Left with the stunning, sharp-tongued Sansa, Jaime finds himself sliding into her DMs, trading flirty comments and sexts, and actually giving a fuck for the first time in years.

But between Instagram thirst traps, vindictive exes, a fashion god who loves drama, and a father who digs up every ugly rumor—including past assaults and creepy professors—Jaime and Sansa’s spark gets doused in gasoline. Add in jealous bathroom hookups, a drunk-driving arrest, and enough sexual tension to power London, and they’re either going to burn down the city or build something that lasts.

Spoiler: They do both.

Notes:

This is a messy, explicit, modern romp through high fashion and higher drama. Expect vulgarity, brutal honesty, rough sex, tender moments, and a lot of bad decisions on the way to a hard-won happy ending. The tags are your guide—enter at your own horny risk.

Chapter 1: The Gilded Cage

Chapter Text

Chapter 1: The Gilded Cage
Jaime Lannister navigates his sister Cersei's lavish pre-fashion week party, feeling suffocated by the empty glamour until she guilt-trips him into being her London Fashion Week escort. At the opening show, Jaime's cynical detachment shatters when he locks eyes with Margaery Tyrell on the catwalk; their post-show meeting ignites immediate, electric chemistry.
👗 💰 🍸
Songs: "Material Girl" - Madonna (1984), "Sweet Dreams (Are Made of This)" - Eurythmics (1983)
Fashion Quote: "Fashion is the armor to survive the reality of everyday life." - Bill Cunningham


The penthouse was a monument to excess, all polished chrome and floor-to-ceiling glass that reflected the glittering, hollow spectacle within. The air thrummed with a bass-heavy remix of something classical, thick with the cloying scent of tuberose, expensive perfume, and the faint, acrid tang of cocaine from a back room. Jaime Lannister stood at the periphery, a crystal tumbler of twenty-five-year-old Macallay dangling from his fingers like a dead weight. He felt less like a guest and more like an exhibit in his sister’s private zoo of the beautiful and damned.

He watched the human kaleidoscope swirl. Models, so thin they looked drawn in charcoal, posed not for cameras but for each other, their laughter sharp as broken glass. Bankers with predatory eyes discussed mergers over lines of champagne. Socialites preened, their outfits costing more than the annual salary of the staff circulating with silver trays. It was Cersei’s world, a perfectly curated ecosystem of vanity and transaction. And it bored him to the point of physical ache.

“Brooding doesn’t become you, brother. It wrinkles the brow.”

Cersei materialized beside him, a vision in liquid gold silk that clung to every curve, her hair a cascade of spun platinum. She smelled of victory and something colder, like frost on marble. She plucked the untouched drink from his hand and took a sip, her crimson lips leaving a perfect imprint on the rim.

“I’m not brooding,” Jaime said, his voice flat. “I’m conducting a cost-benefit analysis of this party versus a root canal. The root canal is winning.”

She laughed, a sound without warmth. “Always so dramatic. This is networking. This is influence. This,” she gestured with her glass, encompassing the room, “is the engine that keeps our name where it belongs.”

Our name. The words curdled in his stomach. The Lannister name: a brand built on old money, newer ruthlessness, and the relentless, glittering pressure to be nothing less than perfect. Jaime had carved his own path out of that shadow with Lannister Tech Ventures, building empires in silicon and code, things that had logic, purpose. This world—the world of fabric and façades—felt utterly pointless.

“It’s a circus,” he muttered, his eyes tracking a man in a feathered jacket attempting to balance a miniature quiche on his nose. “And the clowns aren’t even funny.”

“It’s power,” Cersei corrected, her green eyes, so like his own but infinitely harder, scanning the crowd. “And you look like you’re about to bolt for the fire escape. You need to… unwind.” Her gaze landed on a pair of models by the ice sculpture—tall, willowy, with identical vacant smiles. “Larissa and… whatever the other one’s name is. They’ve been eyeing you since you skulked in. Go be a Lannister. Remind everyone what that means.”

Jaime followed her look. The women were beautiful, yes. Sculpted and empty. A familiar, weary impulse stirred—a need to feel something, anything, even if it was just the friction of skin, the brief, mindless oblivion found in a stranger’s bed. It was a habit born of this very emptiness, a way to silence the noise without having to listen to a single word.

He’d done it before. Last week, after a brutal board meeting, it had been a freelance stylist with pink hair in the bathroom of a members’ club. The week before, a journalist at a product launch, up against the wall in a darkened corridor. Faceless, nameless, a transaction of release. It meant nothing. That was the point.

“Maybe later,” he said, noncommittally, turning back to the cityscape beyond the glass. London sprawled below, a circuit board of real life, of problems he could actually solve.

Cersei’s manicured hand closed around his wrist, her grip surprisingly strong. “You’re coming to London Fashion Week with me.”

It wasn’t a question. Jaime barked a laugh. “Absolutely not. I have a merger in Frankfurt. Three start-ups begging for Series B funding. I’m not spending five days watching emaciated teenagers stomp down a runway.”

“The Frankfurt deal is Tyrion’s problem now. I reassigned it.” She sipped her drink, her eyes never leaving his. “And you owe me.”

The air between them tightened. “Owe you?”

“Who smoothed over the incident with the venture capitalist’s daughter in Monaco?” she hissed, her voice dropping so only he could hear. The memory was a blur of too much tequila, a hotel suite, and a threatened lawsuit that vanished after a single call from Cersei. “Who made sure Father never heard a whisper about your little… dalliance with that married MP’s aide? You leave a trail, Jaime. I clean it up. This is the price.”

Guilt, cold and slick, coiled in his gut. It was her oldest weapon, her most effective. She was the keeper of his secrets, the architect of his pristine public image. Every time he stumbled into the tabloids’ glare, Cersei was there, spinning gold from gossip, turning scandal into savvy. The debt was perpetual, and she called it in with surgical precision.

“A week, Cersei? Of chiffon and pretentious air-kissing?”

“Consider it an investment in family harmony,” she purred, releasing his arm to smooth the lapel of his Tom Ford suit. “You’ll be my escort. It keeps the vultures at bay. And who knows? You might even enjoy it. There will be parties. Better ones than this. And girls…” She nodded again toward the models. “…even more accommodating.”

His phone buzzed in his pocket. He pulled it out, hoping for an excuse, an emergency only he could handle.

The screen glowed with a text from Cersei herself, sent mere seconds ago.

Cersei: 🍸 Don’t look so miserable. It’s bad for the brand. Say yes. Or shall I forward Father the security footage from the Ritz-Carlton elevator last month? x

He stared at the words, then at her smiling, venomous face. The elevator. A blur of red lace and his own stupid, drunken laughter. He’d forgotten about the cameras.

The fight drained out of him, replaced by a familiar, heavy resignation. This was the cage. Gilded, exquisite, but a cage nonetheless. His freedom was an illusion, bought and paid for with a thousand small compromises.

He tossed back the rest of the whisky he’d taken from a passing tray, the burn doing nothing to warm the chill inside.

“Fine,” he ground out, the word tasting like ash. “One week. But I’m not wearing anything ridiculous.”

Cersei’s smile widened, a predator’s grin. “Darling, you’ll wear what I tell you to wear.” She leaned in, her breath a whisper of champagne against his ear. “Now go on. Larissa looks lonely. Do try to remember her name this time. Or don’t. I doubt she’ll mind.”

She melted back into the crowd, a golden serpent sliding through grass. Jaime stood alone again, the weight of the promised week settling on his shoulders. He looked across the room. The model—Larissa?—caught his eye and smiled, running a finger around the rim of her glass. It was an invitation, clear and simple. A distraction. A few hours of meaningless connection to drown out the echo of his sister’s victory.

With a final, disgusted glance at the glittering prison of the party, Jaime set his empty glass on a table. He didn’t smile back, but he began to move through the crowd toward her. It was easier this way. To play the part. To give in. To find a temporary, faceless solace in the very emptiness he despised. The cage door was shut. For now, all he could do was try not to rattle the bars.


The venue was a converted industrial warehouse in Shoreditch, all exposed brick and brutalist concrete, now strung with thousands of delicate fairy lights that did nothing to soften the hard edges. The air was frigid from overworked air conditioning, carrying the scent of ozone, expensive coffee, and a collective, crackling anticipation. Jaime sat in the front row, a place of honor Cersei had insisted upon, feeling like a specimen under glass. To his left, editors scribbled in notebooks; to his right, influencers posed, phones held aloft, their faces blank canvases awaiting the show.

He’d spent the morning being prodded and preened by Cersei’s stylist, emerging in a ruthlessly tailored navy suit that cost more than a compact car. He felt like an imposter, a tech bro playing dress-up in the temple of the superficial. The music began—a pulsing, synth-heavy track that vibrated through the floorboards. The lights dimmed, a single spotlight hit the top of the runway, and the first model emerged.

It was a parade of austere, architectural pieces in shades of charcoal and bone. Beautiful, technically impressive, and utterly soulless. Jaime’s mind drifted to the code he could be debugging, the pitch deck waiting on his laptop. He maintained a mask of polite interest, his fingers tapping a silent, impatient rhythm on his knee.

Then the music shifted. The synths melted into something slower, darker, a cover of “Sweet Dreams” that felt both nostalgic and dangerous. The lighting warmed from clinical white to a deep, honeyed gold.

She appeared.

The dress was not architectural. It was liquid—a cascade of emerald silk chiffon that seemed to move a second before she did, clinging to curves that the previous models had been stripped of. It was cut low in the back, revealing a sweep of flawless skin, and slit to the thigh. But it was the woman inside it who commanded the cavernous space.

Margaery Tyrell didn’t walk the runway; she possessed it. Her stride was a confident, hip-swaying glide, her smile not a vacant mannequin’s pout but a knowing, magnetic curve of her lips. Her eyes, large and warm as cognac, scanned the front row as if looking for someone specific.

They found Jaime.

It wasn’t a glance. It was a collision. Her gaze locked onto his with an arresting, physical force. There was a challenge in it, a spark of amusement, and a blatant, unapologetic appreciation that sliced straight through his cynical detachment. She held his stare as she moved, a slow, deliberate approach down the narrow tongue of the catwalk. The world—the music, the flashing cameras, the rustling crowd—narrowed to a tunnel containing only her and the electric current arcing between them.

Eye-fucking. The crude term flashed in his mind, but it was inadequate. This was a full, silent conversation. Her look said, I see you. You’re not like the others here, are you? His own stunned expression, he knew, was answering back, No. And what the hell are you?

She reached the end of the runway, paused directly in front of him, and executed a slow turn. The back of the dress was a breathtaking plunge, the fabric whispering secrets against her skin. As she turned back, her eyes caught his once more, and this time, the corner of her mouth quirked in a tiny, private smirk before she moved away, leaving a wake of charged air and the faint, intoxicating scent of roses and something spicier, like black pepper.

Jaime realized he’d stopped breathing. He shifted in his seat, suddenly aware of the too-tight fit of his trousers, the rapid, unfamiliar hammer of his heart. The rest of the show passed in a blur of color and fabric he didn’t see. All he could see was the imprint of green silk and cognac eyes.

Backstage after the finale was controlled chaos—a riot of half-dressed models, shouting dressers, photographers, and the thick smell of hairspray and sweat. Cersei had dragged him there, talking at him about fabric sourcing and brand alignment. He wasn’t listening. He was searching.

And then, there she was.

Out of the gown, she was in a simple silk robe, her face still made up with dramatic, smoky eyes. She was laughing at something a designer was saying, her head thrown back, the column of her throat exposed. She looked vibrant, real, amidst the artifice.

Cersei followed his gaze. “Ah. Margaery Tyrell. Olenna’s granddaughter. The family’s rising star. Pretty little thing, isn’t she? All that… vitality.” Her tone was dismissive, edged with a warning.

Before Jaime could respond, Margaery’s eyes found his again across the crowded room. Her laughter softened into that same knowing smile. She excused herself and began weaving through the chaos toward them, the robe swaying around her legs.

“Cersei,” Margaery said, her voice a warm, melodic contrast to the surrounding din. She air-kissed Cersei’s cheeks. “A stunning collection, as always. You must be thrilled.”

“Darling, you carried the finale piece beautifully,” Cersei replied, the praise as smooth and cold as ice. “This is my brother, Jaime.”

Margaery turned those devastating eyes on him. Up close, they were even more potent. “The tech titan. I’ve heard stories. Mostly involving you dismantling boardrooms and breaking hearts.” She offered a hand. Her grip was firm, her skin soft. He felt the contact like a jolt.

“The stories are greatly exaggerated,” Jaime said, finding his voice. It sounded rougher than usual. “On both counts. I prefer building things to dismantling them. And the hearts…” He shrugged, a lazy, practiced gesture. “They tend to be fairly resilient.”

“Or the owners just have poor taste in men,” Margaery countered, her smile never wavering. “I saw you out there. You looked like you’d rather be having a root canal.”

He couldn’t help the grin that broke through his reserve. “It was a close tie. Until the finale.”

“Ah, so you have an eye for fashion after all? Or just for what’s in it?”

“I have an eye for excellence. For things that stand out from the background noise.” He held her gaze, the flirty banter coming to him as naturally as breathing, but feeling different this time—sharper, more real. “That dress didn’t wear you. You commanded it.”

“A rare compliment from a Lannister,” she said, tilting her head. “I’m told you lot deal primarily in gold, not flattery.”

“We appreciate value. In all its forms.”

Cersei watched the exchange like a hawk, her smile growing thin. “Jaime is escorting me for the week. A rare foray into our world.”

“Is that so?” Margaery’s eyes sparkled with mischief. “And what does the escort do, exactly? Carry the bags? Nod at the right moments? Look devastating in a suit and scowl prettily?”

“Primarily the latter,” Jaime said, leaning a shoulder against a rack of clothing. “It’s a demanding role. Requires immense fortitude.”

“It must. All that sitting. The terrible champagne.” She took a step closer, the scent of her enveloping him. “You know, most people in your shoes would be trying to network. Talk mergers. You just look… bored.”

“I’m not most people.”

“No,” she agreed, her gaze dropping to his mouth for a heartbeat before returning to his eyes. “You’re not. You’re the one who built an empire because you were bored with the one you were born into. That’s much more interesting.”

He was thrown. She hadn’t just read a press bio; she’d understood the impulse. “And you? Walking runways, smiling for cameras. Is that the empire you want?”

Her expression softened, just for a moment, revealing a flicker of something ambitious and steel-hard beneath the glamour. “It’s a means to an end. A very visible platform. But no,” she said, her voice dropping, for his ears only. “The empire I want… it’s built of different materials.”

The chemistry between them was a live wire, buzzing in the space between their bodies. It was intellectual, visceral, immediate. He wanted to know what those materials were. He wanted to pull her into a dark corner and see if her kiss tasted as sharp as her wit.

“Margaery! Finale group shot!” a photographer yelled.

She sighed, the moment breaking. “Duty calls.” She started to turn, then paused, looking back over her shoulder. “You know, Escort Jaime, there’s an after-party at The Vault. Terrible music. Excellent cocktails. Even better opportunities to not look bored.” Her eyes swept over him once more, a blatant, appreciative assessment that left heat in its wake. “If you’re brave enough to endure it.”

Then she was gone, swallowed by the flashbulbs and the crowd.

Cersei sidled up next to him, her voice a venomous whisper. “Careful, brother. Rose Thorns have sharp points. And the Tyrells cultivate their gardens with very specific fertilizer. You’re not part of the plan.”

Jaime didn’t look at her. He watched Margaery’s retreating form, the confident set of her shoulders, the way the light caught her hair. The cynical detachment he’d worn like armor lay in shattered pieces at his feet.

“Maybe,” he said, a new, reckless energy coursing through him, “it’s time for a new plan.”

He was no longer just playing a part. For the first time in years, he was genuinely, electrifyingly interested. The cage was still there, but he’d just seen a glimpse of something wild and beautiful flying free. And he desperately wanted to follow.