AN: In which things went differently and Jaime ends up Rhaegar's squire and Rhaegar has a brother, Haerion Targaryen. Harry/Jaime. [A/B/O]

"Brother, what's wrong?"

Rhaegar hesitated as he stepped into his brother's room. Prince Haerion Targaryen looked up at him, his light purple eyes filled with concern. Rhaegar knew that Harry used to have a crush on him but he knew he hadn't returned the feelings as of before the rebellion. He also knew that Harry was an alpha and didn't particularly care about the gender of the person he fucked. He also knew of Harry's background, the magic and knew that Harry would be the right one to ask.

"My squire…" Rhaegar slowly started, pushing his crown back into its place.

"Jaime? What of him?" Harry stood up, pulling his silver hair back with a tie.

"You're not busy for the next few days, right?"

"According to Lord Jon, no, I am not," Harry remarked, narrowing his eyes. "I'll be leaving in four days to go see what I can do about Summerhall and taking care of little Jon at the same time but otherwise no."

Rhaegar sighed, hearing Harry walk up to him and tip his chin up so they could look each other in the eyes.

"Do you need me?"

"No. I do not. But Jaime does," Rhaegar spoke, wearily. The lords on the Iron Islands had been silent for a while which did not bode well, especially since everyone had looked down on Rhaegar for a long time after he had taken Lyanna. He had given up trying to persuade the Starks and every river lord that it had been her idea from the start; he had not kidnapped her. "You know I'm going to knight him in a few days. This is not good timing."

Harry stepped back, raising an eyebrow. "What is not good timing?"

"Jaime is presenting right the fuck now."

Rhaegar heard Harry suck in a tight breath.

"I take it, not as an alpha or a beta, judging by your expression."

"No."

"Hmm. Lord Tywin won't take that well."

Rhaegar dipped his head in a nod, hearing his daughter race through the hallways. He grinned, hoping that Arthur's hands weren't full with her. They had placated the Martells afterward, by making Rhaenys his heir, the only one of his children that really looked like Elia, except for the purple eyes.

"I was hoping you could… look after him?" Rhaegar questioned quietly, as Harry started to pace, running a hand through the strands of hair that had spiraled out. Their mother had always tried to comb it into submission but Harry's silver hair stayed wild, no matter what they tried. "I will talk with Lord Tywin, see what I can do to stave off any talk of sending Jaime to the Wall."

"You better. Jaime adores you."

Rhaegar's lips twitched up into a grin. "I've seen him look at you though, more than he looks at me and I'm his knightmaster. And I've seen you looking at him too."

"Well, he… reminds me of someone."

Harry left his rooms and idly walked through the hallways of the Red Keep, grinning as Aegon and Rhaenys ran past him. Ser Arthur and Ser Lewyn ran by him just a minute later, trying to keep up with the children. Ser Oswell snorted and waved at his fellow brothers.

"Ser Oswell, do you know where Jon is? The little one, I mean?" Harry asked, gesturing for Oswell to walk alongside him.

"He's still in the godswood with Ser Mark," Oswell answered. "He's a quiet one, that boy."

"He is," Harry remarked. "Well, he might as well come along with me when I go to rebuild Summerhall. Get him out of the capital and the court."

"And hatch a few dragons?"

Harry yelped, turning to glare at Ser Oswell, who shrugged bemusedly.

"I heard you and the king talking. That's why you're rebuilding Summerhall, isn't it?"

"... It's part of why. Rhaegar and I have had dreams. We need to be ready."

Jaime started at the knock, wondering who it was. He knew Rhaegar's knock and that wasn't it but… His mind felt like it was too warm, his body too hot to recognize anything beyond the need to get relief. Distantly, he recognized what this was and he recoiled from it, knowing what both his sister and his father thought of male omegas.

"Jaime?"

"Your Grace, don't…"

Jaime swore when the door opened, inhaling the full scent of Prince Haerion Targaryen. It was delicious and his body jerked towards the king's brother, trying to get closer. He didn't want… "You shouldn't… see me like this, Your Grace. Get out."

Prince Haerion blinked, crossed his arms. "Then who? You want to get fucked by some anonymous alpha out in a brothel? Someone who… doesn't care about your well being?"

"I don't give a shit about who fucks me. You shouldn't either," Jaime retorted, his knees shaking so much that he was glad he was sitting on his bed.

"Jaime, just because I let you take the fall for killing my father, doesn't mean I don't care about you."

Jaime stared at Prince Haerion as the other man came closer, stopping right at the foot of the bed. Heat churned in his belly as the scent of the alpha began to drive him crazy, toes curling. It was overwhelming and intoxicating, making him want to kneel and present himself immediately. "You're…"

He stared in amazement as the Prince knelt down before him, reaching out a hand to touch his chest. Even through the tunic he was wearing, Jaime could feel Prince Haerion's hand and it made his heart race, his cock already hard. Sweat rolled down his back as he moved slightly in an attempt to get relief. Slickness pooled around his arse and he whined a little, the sound coming out strangled.

"You're beautiful, did you know that?" Prince Haerion muttered. "And stubborn. The lion who kept my brother's children safe."

"At your orders," Jaime grumbled, as Prince Haerion nudged him down onto the bed and began to take his clothes off. "Fuck…"

Haerion grinned and lowered down to press his lips to Jaime's, licking into his mouth when he opened his lips. "Call me Harry?"

Jaime moaned, feeling one of Haerion's hands slip into his hair and tug a little. His leggings were pulled off and Haerion's other hand moved underneath him, following the slick, avoiding his cock and right to his hole. Jaime arched into the hand that suddenly kept him pinned, his heart racing and his blood almost seeming to boil in his body from the heat. Haerion grinned down at him, the hand on Jaime's chest making distracting circles as two fingers dipped into him.

He startled at the feeling, slight pain and pleasure as Haerion slid down his own leggings, revealing the Prince's cock. It was already hard and Jaime's breathing picked up unconsciously, harsh, shallow breaths.

"You're already so wet for me," Harry whispered, his fingers venturing further, smearing some of the slick fluid around and making Jaime squirm. The hand on his chest moved over a nipple, rubbing it between a thumb and forefinger. Jaime gasped, his back bucking at both sensations. Pleasure sparked throughout his body, tingling everywhere and following the heat at each touch of the alpha's.

"I… My father-"

"My brother will talk with him," Harry spoke, leaning in to draw him into another kiss. The prince's light purple eyes were blown with lust and predatory alpha need though Jaime knew that even now, if he had said no, Prince Haerion would have backed off. Rhaegar's brother was known for being able to control himself during a heat, at least known in certain circles. "Don't worry. Being the king should help with that conversation."

Jaime whined as he watched Harry use some of the slick on his fingers to wet his cock, licking his fingers afterward, then slowly slid in. Jaime groaned, pressure building behind his eyes and at the base of his spine as the prince moved above him. Harry groaned and started to move, each movement making sparks of heat shoot up through Jaime's body.

A hand curled around his cock and stroked a few times. He yelled out at the sudden intense pleasure, his body still trembling with need and with want as he looked up at Prince Haerion. Prince Haerion, who had told him to call him Harry. Who had been the actual one to kill Aerys. At the time, Jaime had just wanted to make the prince happy, to erase those shadows on Haerion's face. So the kingdom called him the kingslayer now, never knowing that he wasn't the one who had done it.

"You're mine," Harry whispered, rocking into him quickly. "My lion."

"Yes, I'm yours," Jaime croaked out, feeling his slowly drying slick and cum on his stomach. "Now and always."

Harry blinked, tilted his head, causing a few strands of silver hair to escape the tie and gasped, his purple eyes going wide with pleasure. His alpha knot started to grow and Jaime groaned, arching his back, trying to get more of the pleasurable feeling of being full.

A knock on the door drew Harry out of the light slumber that he had fallen into. Sparks of pleasure as he moved reminded him that he and Jaime were still connected and he went still, trying not to wake up the man next to him.

"Yes?"

Rhaegar poked his head in, looking the two men over. It had been two hours since he had sent Harry to take care of his squire and he hadn't heard a peep from them since. "Is he okay?"

"Yes. What's wrong?"

"Nothing. Lord Tywin and I spoke," Rhaegar remarked quietly, stepping in and closing the door behind him. "When your heats are done, I would like to speak with you both."

Harry's eyes narrowed but he nodded. "Alright. You know this will take a few days."

Rhaegar nodded, his dark purple eyes going soft. "Thank you, brother."

"I… I didn't do this for you," Harry offered, peering down at the still sleeping Jaime Lannister and pushing some of his sweaty hair off his forehead.

"I know."