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nights of holy fire

Summary:

This is a smutty companion piece to a love that burns like holy fire and will include all the sexually explicit scenes between Arthur and Merlin for this series.

Chapter 1

Notes:

(See the end of the chapter for notes.)

Chapter Text

They’d been kissing in the tent for some time when Merlin finally worked up the courage to consider going further. “You know,” he said, between hot and heavy breaths, forcing himself to look into Arthur’s eyes despite the nerves, “I can think of another way I can take care of you… a fun way, if you want?”

Arthur nodded, his own eyes alternating between Merlin’s lips and his intense gaze. He looked as nervous as he always did the moment just before he proclaimed a prince was never nervous.

Merlin began to kiss his way down Arthur’s body, taking the time to linger and dwell every inch of the way. When he reached Arthur’s adonis belt, he slowly began to unlace his trousers, revelling in the nervous way Arthur’s breath hitched. He caught Arthur’s gaze and kept him focused there as he slowly pulled the trousers open.

“Ready, my lord?” he asked with a grin, lips trailing only a hair’s breadth away from the tip of Arthur’s cock. When Arthur bit his bottom lip and nodded, Merlin took him into his mouth, kissing, licking, and playing with the tip between deeper dives where he’d pull in his cheeks to keep as much contact with him as possible.

When Arthur began to lose control and Merlin could feel him bucking up against him, he pulled away, tauntingly. He pulled Arthur’s pants away completely then, and trailed his fingers slowly up and down Arthur’s thigh. 

“Would you like to feel me inside you, at the same time?” he asked.

“Will that… hurt?” Arthur asked.

“It may be a bit uncomfortable at first, though not so much with magic. It can feel… very good, in fact.”

“I trust you to take care of me, Merlin--whatever that means.”

Merlin smiled with equal measures warmth and mischief as he ducked back down to suck Arthurs cock, eyes glowing gold as he slowly worked one and then two fingers into Arthur’s ass, magical warmth and lubricant helping the process along significantly. He didn’t move his fingers very much once they were in, preferring instead to apply pressure and fullness as he took Arthur’s cock deeper and deeper into his throat until the inevitable, explosive finale.

Merlin pulled Arthur’s pants back up, but left them unlaced, and then brought himself up to lay entangled in Arthur’s arms as the prince regained his breath.

---

“Did you have someone before?” Arthur asked as they lay intertwined, a blanket lazily draped over them. “Is that how you know how to do all that?”

 “Jealous, sire?” Merlin teased, though he only let the quip sit a moment before answering. “I had a friend back in Ealdor, Will. We weren’t… it wasn’t a relationship, really, but we grew up together. Will was the only one other than my mother who knew about my magic, and my body, and we… experimented? I guess? It was more than friendship without being romantic exactly, I’m not sure I could really define it.”

“So you’ve never been in love?”

“Not…” Merlin buried his face in the nape of Arthur’s neck, unable to face him and still manage an answer. “Not until you, Arthur.”

Arthur ran his fingers through Merlin’s hair for a few long moments before managing to respond. “I… feel the same.”

And then, because he would have absolutely died of mortification if he let the sweet moment linger, he pulled Merlin from his neck by the hair with a wicked grin, kissed him hard, and flipped him onto his back. “Your turn.”

---

“There is one thing I’ve never done… with anyone,” Merlin whispered between heavy kisses when they’d begun to recover from the second round and work their way up again.

Arthur pulled away just enough to be able to look at Merlin quizzically.

“I’ve never… with the parts I was born with. It.. it always seemed a lot more personal.”

“I’d never… I know you’re a man, Merlin, I wouldn’t ask that of you.”

“I…” Merlin sighed heavily. It was a hard conversation to have. “It’s because I know that you see me for who I really am that… that I think it might…”

“Merlin. Do you want…”

“Only if you, I mean, I do but only if you also…”

“Merlin?”

“Yeah, Arthur?”

“Shut up.” 

And with that, Arthur pulled Merlin into another passionate kiss, hands wandering along his body as he held him close. 

---

As rough and passionate as the kissing had gotten, Arthur was all sweetness and nerves when he finally found himself on top of Merlin, their foreheads together and lips just barely apart. “Are you sure?” he asked again, the head of his penis teasing gently against the entrance to Merlin’s cunt.

Merlin nodded, breath heavy and hitching “yes.”

“Really sure?” Arthur asked, significantly more teasing in his tone this time, pushing in ever so slightly.

Merling groaned, and Arthur went no further. He stayed just barely inside Merlin, a wicked smirk across his lips. He licked his thumb and brought it down between merlin’s legs, teasing his clit as he stayed there, just at the very edge. “Ask nicely, Merlin .”

Merlin groaned again, and kissed Arthur, and then took a deep breath and obeyed. “Please, Arthur, I need you inside of me.”

Arthur smiled his trademark, self satisfied smile, but kissed Merlin with more sweetness and tenderness than he’d ever before shown in his life as he pushed fully inside his vagina and began to thrust inside him.

---

“Merlin?” Arthur asked as they lay in each other's arms, finally spent.

“Yeah, Arthur?”

“I really do love you, I think. It’s kind of terrifying.”

“Don’t worry, Arthur, I won’t tell anyone,” Merlin smiled, melting. Then, he nestled even further into Arthur’s arms, as if he could never possibly get close enough, and they slowly drifted off to sleep.