Thread by @jax_pr00f

luke thinking he has no chance with jacaerys because jacaerys is heir to the throne and he is busy helping his mother run dragonstone, he's in meetings all day long, and speaking with traders and training with men in the courtyard and sharpening his skills

so luke leaves for driftmark to learn from his grandfather and hopes that he can impress his older brother with what he has learned. corlys is delighted that lucerys has shown an interest in his future lordship and takes lucerys with him to the high seas and on many expeditions

and he learns the ropes from corlys and meets with his future men and learns from them, but he always sends letters back to his mother, telling her what he has learned and enjoyed. he promises to bring her jewels and silks and fine cloth from the places he visits when he returns

he never sends any letters to jacaerys, assuming that his brother is simply too busy and disinterested in learning of what lucerys is doing when he's so busy half-running dragonstone already. he also never sends letters addressed to jace bc he fears he will not get a response.

he fears that jacaerys will read his letters and not reply, that he will send back a letter and inform lucerys that he is simply too busy. which would not happen, he knows, his brother has always been his biggest support. but still, lucerys fears his brother's rejection.

he learns of romance and lust as well, aboard his grandfather's ship. he learns of sweltering kisses and wandering hands in the dark, of heated glances and trailing fingers, lucerys learns of soft smiles and gentle caresses. this, he does not tell of his mother.

he writes instead to baela, who delights in sharing her own adventures. they bond over salacious men who follow with their eyes, inviting bodies to warm their beds, baela shares tips for seduction and teasing. and lucerys sends back his results and observations.

when lucerys returns to land and driftmark, it is baela who awaits him, smiling mischievously as she draws him into her chambers. they sit and giggle over their conquests.
until baela says, "he reads them."

luke stops, confused. "who?"

"jacaerys, he reads them all."

luke stilled, something like panic building up in his chest. "our letters?"

baela was startled, then laughed. "gods, no. not those, the ones you send to mother. he reads them all, and misses you dearly."

luke sipped at his sweetened tea. "he has never written one to me."

baela shoved his shoulder playfully, "of course not, he fears you will not respond."

luke frowned. "i would write him back pages worth of words, i missed him."

"then tell him so, mother and the rest of our family are to be here soon, we've all missed you." baela advised him.

lucerys spent days leading up to his family's arrival with some of his paramours. easing the worry the only way he knew, pleasure. his very favorite, a tall man with brown hair and eyes, he kept at his side almost at all times. even had the man sleep in his bed.

it was how jacaerys found him the morning of their arrival. naked and in the throes of passion as he rode the man desperately.

"luke?!"

lucerys startled, turning around to see his brother's shocked face as he stood in the doorway of his bed chambers.

"brother!" lucerys gasped, scrambling off his partner and reaching for the bedsheets. he could not defend himself, staring wide-eyed at his slowly angering brother.

jacaerys turned to the man, "leave us and do not approach lucerys again unless you want your life to be ended."

the man looked at lucerys for help, but lucerys turned away from him, jerking his head towards the door. the brothers remained silent until he had left.

"jacaerys," luke said, "i- i was not aware you were here."

jace stared at him with a blank expression. lucerys squirmed.

then he began walking towards luke, ripping the bedsheets away despite his protests. his heart caught in his throat as jacaerys grabbed a hold of his thighs and spread them apart. he burned in humiliation, his wet hole winking up at his brother.

"jace," luke whispered.

"i thought about you," jace said, eyes still on his hole. "i missed you at my side, i craved your warmth day in and out. and you have been fucking other men all this time? whoring yourself out?"

"jace, no!" luke said, shocked. he tried to lose his legs, but jacaerys held fast.

then, jace was on the bed, between his legs, freeing his cock from his breeches and slapping it down onto luke's clit.

"did you fuck him last night too?" jace demanded, lucerys said nothing but gasped when jace's cock slid between his pussy lips.

"you're so fucking wet," jacaerys snarled, "for a man that doesn't deserve you. for a man that will not be able to give you what you need."

lucerys whimpered, pushing back onto the cock, trying to ease it into his cunt. he was half sure he was dreaming.

surely his brother did not mean what he said? they were brothers but jacaerys had never shown interest in him like so, and lucerys had resigned himself to loving jacaerys from afar, and indulging in lovers that resembled him greatly.

but lucerys wanted jacaerys to see him clean and untouched. not covered in the seed and sweat of another man. lucerys wanted jacaerys to take him wholly as his, for their first coupling to be gentle and loving. not filled with accusations and anger like this.

lucerys whined as jacaerys bullied his fat cock into him, clutching at the hands that clamped around his hips in an iron grip.

"slower," he mewled, clenching around his brother. "please, jace, just a little slower."

"you were riding that man very well just now," jace said.

lucerys flushed, squirming. he moaned as that pushed in another inch of his brother inside. "you- you're bigger. not used to it."

it had been the wrong thing to say because jacaerys had bent over him and shoved the rest of his cock inside without hesitation.

lucerys screamed, his cunt gushing slick as it accepted jacaerys' cock. his back arched, and in his belly, he felt a tightening. jace grunted, his hips pressed tightly against luke's bottom.

"jace," luke begged, "wait, just wait for a little. i'm sorry, i'm sorry."

"whore," jacaerys spit out. "whorish little brother, if you wanted me to stop, you'd stop moving your hips."

lucerys threw his head to the side. his hips had been rolling on their own, small rolls and grinding to push jace deeper inside. if at all possible.

he grabbed jace's hand, and wrapped it around his neck. he stared right at jacaerys as he squeezed his walls.

"only you, jacaerys," he murmured. "everyone else were because i wanted you."

jace squeezed. "whore," he said again, this time with a shade of fondness in his voice.

"your whore," lucerys dared say. "only yours."

"i'll kill all of them," jace said, thrusting into his brother's wet cunt. luke moaned. "i'll kill every man that has touched this sweet cunt. it's mine, now. forevermore."

lucerys whined, feeling his brother's cock carve a new shape into him. "gentle," he begged jace.

jace refused. "no, not today. you'll take what i give you, and you'll thank me for it. you'll love it even. drooling and crying for more, I'll bet."

and he did. jacaerys took lucerys many times, fucking load after load into his cunt. till it looked sore and swollen, and lucerys had begged jacaerys to give him a break. when jacaerys had not, he'd simply laid there and taken it. like a good little whore.

he had a small protrusion in his lower belly when jacaerys was done. all of his brother's loads inside him, his seed dripping and oozing out of him. his swollen clit throbbing as it slowly recovered from its abuse. lucerys' hips still bucked slowly, aftershocks of pleasure

lucerys did not look for another to sate his pleasure again. and in time, jacaerys petitioned for his hand and it was given, and that night he took lucerys again and again. and lucerys gave himself wholly to his brother because it was jacaerys. he was jacaerys' whore.