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“This isn’t—fuck—going to help your grade,” Merlin gasped as Arthur rocked himself back on his cock, chest pressed into Merlin’s hard oak desk.
Arthur rolled his eyes so hard he wondered briefly if they could get stuck. He pushed his hips roughly back against Merlin’s groaning as it drove his cock in deeper. He gripped the edge of Merlin’s desk and pressed his cheek to it, turning his head to the side to look at the door just across from them. Anyone could walk in. Anyone could walk in and see the professor fucking his student instead of grading exams. It was thrilling.
“I don’t care about—ah, fuck it, just move!” he cut himself off with the whining demand, tired of doing all the work. “Fuck me already!”
Merlin chuckled slowly, placing one hand against the small of his back while the other gripped his hip tightly. “You know, I think I like you much better like this.”
“Oh, shut up,” Arthur huffed, face flushing.
“But you look so pretty on my cock,” Merlin purred, practically preening behind him. “All spread out over my desk… Mm, I could get used to this.”
Arthur snorted softly and tried to rock his hips again, gripping the desk tighter in frustration when Merlin held him in place. Bastard. “Fail me and you’ll have the time to.”
“Tempting offer…” Merlin sighed.
He draped his front over Arthur’s back, and a shiver ran down Arthur’s spine as he felt his professor’s lips ghost the back of his neck. “I’d very much like to see you graduate, though.”
“Enough work talk,” Arthur groaned, trying to look back to him, “I’m not a fucking cock warmer—”
“You could be.”
“Just fuck me,” Arthur ordered, ignoring the hot arousal that shot through him at the idea. He could just picture it… Class in session, Merlin giving his lecture from his desk while Arthur sat on his lap, naked and exposed for all to see—not moving, not fucking himself, just…sitting on his cock, still forced to take notes on the lecture with his professor’s cock buried deep inside him, pressing right against his prostate in that perfect way and—
Arthur gasped sharply when Merlin pulled out and thrust back in roughly, pushing Arthur’s chest harder against the desk from the force. His own cock, neglected and hard and leaking, hung heavy just in front of the desk he was pressed up against. Merlin only thrusted in once more before pulling out completely, drawing a frustrating whine from Arthur’s lips.
“Oh, come on!” he snapped, “it’s like you want us to get caught!”
“Relax,” Merlin laughed breathlessly, pressing a kiss to the top of his spine, “I just want…to see your face…”
Arthur blinked slowly.
Before he could ask what Merlin meant, he was being gently manhandled onto his back instead of his chest, front completely exposed for Merlin’s viewing. His cock twitched against his belly. Merlin’s eyes slowly trailed over his body, a wicked grin spreading over his lips.
“Now, that’s much better,” he sighed.
Merlin patted Arthur’s thighs, humming in approval when Arthur wrapped his legs around his waist and pulled him close. He inhaled sharply when Merlin lined the head of his cock up to his hole and pushed back in with one quick, smooth thrust.
“Gods,” Merlin gasped, stilling once he was buried as deep as he could be inside Arthur, “it’s like you’re made to take my cock.”
Later, Arthur would deny the whimper that fell from his lips at the words. Now, though, as Merlin pulled out and pushed back in hard and fast, all of Arthur’s dignity left him in a rush and with a moan. It was so good.
It was intoxicating.
Arthur’s back arched off the desk when Merlin thrust in again, brushing over his prostate and drawing a high, keening noise from his lips. His cock jerked, precome dripping onto his belly as his abs quivered. He dug his heels into the small of Merlin’s back, forcing him closer.
Echoes of gasps and moans and skin against skin filled the lecture room. It was better than any fantasy Arthur had let himself dream up. His eyes rolled back as Merlin pounded into him, relentless and rough and perfect. He nearly whimpered when he felt a thumb press against the rim of his hole, stretched around Merlin’s cock as he slid in, in, in. He did whimper when the thumb stretched him wider, forcing itself in alongside Merlin’s cock.
“Look at you,” Merlin gasped, reverent as he pressed his thumb into Arthur’s hole next to his cock as he fucked him. “Gods, you take it so eagerly…so greedy, you want more, don’t you? You could take more… What a slut you are…”
“Yours,” Arthur swore, desperately trying to fuck himself in time with Merlin’s harsh thrusts.
“Mine?” Merlin asked. He slowed down his thrusts and pulled out his thumb, pulling a low whine from Arthur. He moved with careful precision, grinding his hips against Arthur’s as he buried himself to the hilt and fucked him with steady rolls of his hips. “My slut? Are you? Say it. Tell me you’re my slut.”
Arthur threw his head back against Merlin’s desk, stars bursting behind his eyes as Merlin’s cock rubbed his prostate over and over with the small movements. Heat pooled in his belly, tight and low, and his cock twitched. “I’m your slut,” he promised, breathless, “only yours, only yours, I’m yours—oh, fuck—professor!”
Merlin pulled back, the head of his cock catching on Arthur’s rim just barely before he slammed back in with a force that rocked Arthur’s body and made him cry out, loud and shameless. He nearly sobbed when Merlin did it again, and again, and again, and—
His body quaked with the force of his orgasm as it rolled over him, come shooting over his chest and painting his skin in thick, white ropes. A stream of moans fell from Arthur’s lips like prayer, unintelligible and pleading, as Merlin fucked him through it, his thighs quivering and abs spasming. Even his thoughts were gibberish, filled with Merlin and lust and a desperate need for more.
Then, Merlin stopped, draped his body over Arthur’s, and Arthur swore if he hadn’t just come, he would have again then as Merlin filled him with his spend, mouthing at Arthur’s collarbone as his orgasm washed over him.
The room was hot, and Arthur’s chest was sticky between them as Merlin laid on top of him, limp and useless with his cock still inside Arthur—keeping his come from leaking out.
Arthur groaned.
“Get off, you oaf,” he grunted, dropping his legs shakily from Merlin’s waist and shoving at his shoulder. Merlin snorted unattractively before he placed a kiss to Arthur collarbone and straightened up.
He pulled out slowly and Arthur hissed, face flushing at the feeling of still warm come dripping down his arse and thigh. He flushed deeper when he realised it was going to get on the desk if he didn’t move.
He didn’t move, though.
Instead, Arthur let out a heavy breath and stared up at the ceiling, boneless and blissful still from his orgasm. It had been just like he’d imagined. Fucking brilliant.
“You’re going to be late for your next class, Arthur.”
Arthur scrunched up his nose in distaste at the reminder of his schedule. “I hate psychology, anyway, the professor always tries to psychoanalyse me.”
Merlin huffed out a laugh. The sound, light and airy and real, made Arthur’s lips twitch up in a smile. He raised his head from the desk to look at Merlin, cocking an eyebrow when he saw him sitting in his desk chair.
“You could sit on my lap while I grade midterms?”
“I told you I’m not a cock warmer.”
“I didn’t mean it like that,” Merlin snorted, “but sure, go on, let Nimueh tell you all about your daddy issues again.”
“Seriously, what is her fixation on my father?” groaned Arthur as he pushed himself upright, grimacing slightly as more come rushed out and on the desk beneath him at the movement. He noticed Merlin’s eyes flick down to the wood under his arse and flushed, looking away. “Sorry…”
“Mm, it’s fine,” Merlin murmured, “here, come on, come down and get dressed real quick and I’ll clean it up.”
Arthur nodded slowly and pushed himself to his feet. He swayed slightly, unsteady, and took a moment to regain his sense of balance. Only once he was sure he could move without falling, he gathered his clothes up off the floor.
As he pulled on his pants and then his trousers, two arms wound around his waist. Gentle, tissue covered hands wiped down his chest from behind him as soft lips rested against his neck.
“I hear…” Arthur blinked and tilted his head back against Merlin’s shoulder when he trailed off, curious.
“What?”
Merlin nipped his skin lightly before chuckling and tossing the tissues in the bin next to his desk. He just held him, then, chest pressed to Arthur’s bare back. “I hear that Nimueh and your mother were an item before Uther swooped in and stole her heart, and she’s still bitter.”
“Would explain why she acted like she was the one who lost a mother and wife when she died,” Arthur huffed, tilting his head to the side as Merlin’s lips continued to trail over his skin. “Gods, you—fuck, you’re insatiable.”
“You love it,” Merlin teased before sucking a small mark onto the skin just under Arthur’s jaw. Arthur groaned, eyes rolling back, and let him do it. He did love it.
“I need to finish getting dressed,” he muttered.
A mournful noise sounded from behind him, but Merlin pulled away nonetheless and let Arthur pull his shirt back over his head. Once he had it all straightened out and adjusted neatly, he turned around to look at Merlin, smiling when he found him dutifully wiping his desk clean.
“I’m off to my free therapy session, then,” he hummed, “see you at home?”
Merlin paused in his wiping and stared at his desk for a moment. Then, quickly, he tossed the messy tissues in the bin and wound his arms around Arthur’s neck, pulling him close. “I’m going to be in late because of these exams, but if you make reservations for, say…” he trailed off, ducking down to press his lips to Arthur’s jawline again. Arthur shuddered as Merlin mouthed at his skin, before speaking, words slightly muffled, “nine…and we can still go out for our anniversary dinner…”
“Nine it is, then,” Arthur confirmed. Merlin placed one final kiss to Arthur’s jaw before pulling back and pressing a chaste, quick kiss to his lips. “Don’t go too rough on my exam, I was…very distracted.”
“It’s like you want me to get fired,” Merlin retorted, rolling his eyes. “You should’ve known dating the professor was never as luxurious as the movies made it sound. I’m afraid I’m going to have to go extra…rough on you…”
“Do you ever stop thinking about sex?”
“Sometimes.”
“Mm, right, well, nine. Do not be late, Merlin,” Arthur ordered, narrowing his eyes. When Merlin nodded, he pressed a final kiss to his lips and wiggled out of Merlin’s arms. “I’ll see you at home. Nine. That means be home by eight.”
“Yes, yes, I get it, I got it,” Merlin groaned, dropping down into his desk chair. “Date a younger man, they said. It’ll be fun. Damn bossy prat of a—”
“I can hear you, you know,” Arthur huffed, “I’m only six years younger than you.”
Merlin’s lips stretched into a wide, cheeky grin, eyes twinkling with mischief. “I love you.”
Arthur scoffed and rolled his eyes. Still, he couldn’t help the grin that pulled at his own lips at the words as he turned to walk away. He waited until he was at the door, fingers wrapped around the handle, before glancing back, eyes softening at the sight of Merlin’s pleading puppy-eyes looking after him. A quiet sigh fell from his lips before he called back, faux long-suffering exasperation coating his words,
“I love you, too.”