Work Text:
I’m running a bit late but I’ll be there soon, I promise! Love you!
Alhaitham glanced at the message he had received from his boyfriend for only a second before placing his phone back on the ground and taking Zhongli’s cock deeper in his mouth. He moaned, the thickness of it something he couldn’t quite get over. He had been on his knees, half nude for almost an hour servicing his professor’s cock, keeping him warm and taking his loads whilst he marked assignments.
Alhaitham rubbed his clit rapidly, loving how the fat cock made his lips stretch and how it pulsed in his throat. He had the taste of his cum in his mouth and it only made him ground himself deeper on the dildo he was riding. He had already cum multiple times and had made the floor wet from squirting, but he still burned with lust, and he knew he had still to take his professor’s cock.
Alhaitham had been cheating on his boyfriend Kaveh for about 2 months now and he had passed the point of remorse. Kaveh was great, Alhaitham loved him, and he enjoyed the time they spent together but more recently they often bickered and Kaveh was busy completing his postgraduate studies and work placement and other responsibilities especially in the past few months. They had started seeing each other less and less and had been arguing more and more, leaving what time they did have together often full of arguments and pettiness. Alhaitham had tried been understanding but it was difficult when he saw Kaveh prioritise everything but himself and that sometimes included Alhaitham too.
Two months prior, it was the eve of Alhaitham’s birthday. Alhaitham cared little but Kaveh did. Or at least he did, historically. Kaveh had planned for them to meet at their favourite bar outside of campus for drinks before going to Kaveh’s and starting Alhaitham’s birthday right with some long overdue sex but after waiting for thirty minutes Kaveh called, hysterical and apologetic. Something had come up and he couldn’t make it. He was sorry and he would make it up him. If anything, maybe he would prefer it because Alhaitham you don’t care about your birthday anyway.
Alhaitham almost expected it, but he couldn’t rationalise the way of the pang of disappointment and betrayal he felt. Kaveh was his boyfriend and while Alhaitham didn’t care about his birthday he enjoyed the attention Kaveh gave him for it. Telling him that he was glad to have been born in this world, that they met and were together. That he loved him and couldn’t wait for the next year of their relationship together.
He had planned to leave but stayed to have a drink and to finish reading the book he had brought before he bumped into one of his university professors, Zhongli. He had pushed away his surprise, remembering that his professors had personal lives too and he didn’t mind when Zhongli asked how he was. Alhaitham had attended quite a few of the professor’s classes. He enjoyed history and enjoyed even more that Zhongli had boundless knowledge of things Alhaitham knew little about. He was impressed and even attended not compulsory lectures, wanting to know more.
They started speaking about class and Alhaitham was quick to pick his brain about theories and curiosities he had. It was fun and they had drinks and Alhaitham couldn’t remember how he had started talking about Kaveh, uncharacteristically griping about him and learning that Zhongli was single. When they had left the bar Alhaitham pulled Zhongli in for a kiss first and shortly after Alhaitham was starting his birthday off with some long overdue sex first by getting fucked from behind in one of the alleys near the bar and then again later that night in Zhongli’s luxurious bedsheets.
He had been wracked by guilt the next morning and was going to tell Kaveh immediately but when Kaveh hardly responded to any of his messages that day (and not even sending Alhaitham happy birthday (to which he did a day later with an apology)), he didn’t. Instead, he booked in one of Zhongli’s office hours which were meant for one-to-one support, and he ended up on his knees, sucking off the older man.
Zhongli knew Alhaitham was cheating with him on his boyfriend and didn’t care. He also knew that while sleeping with one of his students wasn’t entirely against the rules it would be greatly frowned upon. He still didn’t care. He felt lonely, it was difficult sustaining a good and fulfilling sex life when he was as busy as he was and Alhaitham was perfect for him. Bright, determined and lewd. He hadn’t needed a lot of convincing in the first place especially when he was already so brazen towards him.
The first week of their affair had been intense and wild. Alhaitham ignored all contact from Kaveh, mad but also feeling so good from finally being fucked properly again that he didn’t care. He spent countless hours in Zhongli’s apartment, in every position conceivable cumming and cumming like he deserved. However, when the initial lust cleared Alhaitham considered his options. He didn’t want to break up with Kaveh, but he wanted Zhongli, it was wrong, but he felt as if he deserved this much.
Alhaitham could no longer spend so many hours in Zhongli’s home, but he could in his office and so multiple times a week he booked in the last hour or so of Zhongli’s tutoring time or he invited himself to Zhongli’s private work time and indulged himself.
Zhongli was a busy man, but Alhaitham was horny and cock hungry and was content with warming his professor’s cock with his mouth or occasionally his pussy as the older man completed his paperwork and marked his assignments. He had left spare clean clothes in his office and a dildo to ride on should he want it. He was glad that Zhongli’s office was secluded, otherwise everyone on campus would know what they were getting up to.
Zhongli enjoyed this too, Alhaitham’s insatiable lust and submissiveness of being a tool of pleasure ensured that he was constantly hard, spent and wanting more. He loathed moments when he was not inside him.
Alhaitham pulled off Zhongli’s cock, giving his mouth relief. He gazed lustfully the member which was slick with his saliva and hard and he swiped his tongue over the tip, slurping his precum. He moaned unabashedly and started fisting the length with his hand, loving the weight of it. He licked up and down, Zhongli’s natural musk still driving him crazy and making him feel close to his orgasm again.
He and Kaveh still fucked on occasion, but it was rarely more than a quickie, leaving Alhaitham often unsatisfied. He knew he was probably unhealthily obsessed with pleasure, but he didn’t care. He had a sexual appetite and saw no reason to not fulfil it and Zhongli had no complaints.
Lost in his ministrations of lapping his professors’ cock and sucking on his balls, Alhaitham almost missed when Zhongli’s long fingers threaded through his hair positioning him back to take his cock in. Alhaitham let his jaw fall slack and he compiled knowing what Zhongli wanted to do. He looked up to the older man, his handsomeness never failing to make Alhaitham’s pussy slicken and flutter. Zhongli’s regal features were consumed with lust, and he tightened his grip on his student as he started to roughly fuck him mouth, knowing that he could take it and he loved it. A win-win situation because he wanted to cum into his student once again.
Alhaitham moaned around the cock as Zhongli abused his throat, his mouth accustomed to him now but still smaller than Zhongli’s thickness. Tears escaped his eyes and erratically he rode on the toy, one of his hands still vigorously rubbing his clit as he chased his orgasm.
“You’re so good to me you know,” Zhongli said, his deep voice both breathless and telling of the pleasure he felt. “Warming my cock so well while I get my work done.” The words pleased Alhaitham, and he let out another moan which came out strangled because Zhongli had pushed himself deep inside him.
Zhongli threaded his other hand into Alhaitham’s hair and started fucking his throat harder. Alhaitham felt nothing but the roughness of the cock being forced into his tight throat again and again, like he was nothing but a fleshlight and he could only let out muffled sounds of pleasure.
Zhongli’s moaned, looking down at his erotic student. His love for rough treatment making him want to be rougher and rougher. Alhaitham’s head pricked with pain which harmonised perfectly with pleasure as his body moved to Zhongli’s whim. The stretch of his throat and Zhongli’s hard thrusts making him wetter and wetter on the toy and making him close to his own release.
Zhongli moaned and pushed in deep as he came, his cock bursting and releasing his cum down Alhaitham’s throat for the third time today, the sensation very losing its novelty. He continued to fuck into him, his thrusts now slower as pleasure coursed through him. He looked down to his debauched student and used one of his thumbs wipe his tears before praising him, knowing it would tip him over too. “Good boy, taking my cum so well.”
And Alhaitham did cum. His cunt clenched hard on the toy as euphoria consumed him. His body shook and convulsed as he saw stars. He wanted nothing more than to forever live in the moment and he desperately tried to prolong it by continuing to fuck himself on the dildo.
When he came down from his high, Alhaitham pulled himself off Zhongli’s cock and licked his lips, the taste of Zhongli’s cum was now more familiar to him than Kaveh’s and he was addicted to it.
Sensing Alhaitham’s insatiability, Zhongli asked. “Don’t you have a date to get ready for?”
Alhaitham shrugged and glanced at his phone again. Kaveh couldn’t get mad at Alhaitham for being late when he was always late.
“I’m not finished here yet,” Alhaitham responded simply, ignoring that his voice sounded raspy, and his throat was sore. “You still need to fuck me.”
Alhaitham, while having cum numerously from his fingers and the toy he had brought with him, felt an ache in his pussy which he knew that could only be filled by cock. He loved having Zhongli in his mouth, but he loved having him in his pussy more and he wasn’t going to leave without it.
Zhongli chuckled and allowed it when Alhaitham climbed up and sat on his lap. He lined himself up with his professor’s soft cock and eased himself on, liking the feel of the cock when it hardened inside of him and knowing it wouldn’t take long for that to happen.
Alhaitham pulled off his tops, so he was completely nude, not caring if Zhongli was fully dressed still and leaned forward to give his professor a kiss.
They kissed hard and roughly, their lips almost clumsy and frenetic the lust between them still burning hot. Zhongli easily slipped his tongue into Alhaitham’s mouth, tasting his cum in him and pulled him closer. The feel of his lean body, making pleasure pool again in the base of his stomach. Alhaitham allowed Zhongli to take the lead with the kiss and instead started to focus on humping himself on Zhongli’s cock. His sensitive passage glad to be filled by Zhongli again. He was sensitive but needed him more than ever.
Zhongli ran his hands over his student’s body, his massaged his legs and the curve of his ass, encouraging his hips to continue to move erotically on him. He was already getting hard.
And his foot feeling the vibration of Alhaitham’s phone, made him slightly harder.
He didn’t have to look to know who it was. “Your boyfriend is calling,” Zhongli said, pulling away.
Alhaitham blinked at him, seemingly forgotten the world outside their ministrations and slowly looked down at his phone, Kaveh’s name flashing on screen. Alhaitham made a split decision. Without getting up, he leaned away and reached down to swipe his phone off the ground. He accepted the call.
“Alhaitham!” Kaveh called out, his voice full of relief. Alhaitham wondered briefly if Kaveh was going to cancel on him again. “I’m almost on my way. Are you there yet?”
Alhaitham’s eyebrows rose, he was surprised but also knew that Kaveh’s almost on his way was anywhere between 20 minutes and an hour and a half.
“I’m not there yet,” Alhaitham said, he ground his hips down onto Zhongli, feeling his cock twitch and grow inside him. He suppressed a moan. He was so big and filled himself so fucking well. He wanted to get fucked so bad.
Zhongli’s hands were on his waist, massaging his sides and making him shiver. Alhaitham leaned forward and allowed Zhongli to take one of his Alhaitham’s nipples into his mouth. He started to suck on him and Alhaitham only half heard what Kaveh was saying.
“Oh great! – I mean, I’m glad I’m not keeping you waiting there. I’m so sorry about this…” Alhaitham resisted the urge to roll his eyes as he again heard Kaveh’s list of excuses and apologies, something he knew by heart and he himself could recite in his sleep.
He started bouncing on his professor’s hardening length as he listened to his boyfriend’s prattle. His bounces became deeper, especially as Zhongli was almost fully hard. He wondered briefly what would happen if he placed the phone on the side and on speaker, allowing Kaveh to hear him cheat on him and really enjoy it but he didn’t.
“Sorry Alhaitham, I’m rambling again, I know you’ve heard this all before.”
“It’s fine,” Alhaitham said, wondering if he sounded too breathless or close to moaning. He didn’t stop riding Zhongli’s cock, his hips bouncing and gyrating expertly. The feel of it was too good and perfect and addicting. He was being filled and he was going to be bred and he loved it.
Zhongli gripped hard onto Alhaitham’s ass and gave him a smirk as he started to thrust upwards into him. Alhaitham bit his lip to stop any involuntary sounds from escaping him. Fuck, he felt so good and Kaveh didn’t even know.
“Sorry, Haitham, I am on my way and I’ll be there soon. Are you far?”
Alhaitham was geographically quite close to the bar they had agreed to meet in but he wasn’t going to make his way until he was done. “Not too far,” Alhaitham said and paused, knowing the more he spoke the more he would be found out and while the thrill of it was making him wetter than ever, he didn’t want his fun to end yet. He met Zhongli’s thrusts, their bodies moving in perfect harmony. “Just need to finish and I’ll make my way.” Alhaitham gripped hard onto Zhongli he had hit one of his sweet spots and he felt like he was going to go to heaven. “I’m still in the university,” he then added. He then lowered his tone and whispered to Zhongli to go faster, and he did. His cock always felt so good, his body moved on its own, maximising the pleasure he felt. And getting fucked while Kaveh spoke to him felt so much better. He was cheating on him, and it just felt so so good.
Zhongli started kissing his skin softly, not enough to leave marks but enough to make Alhaitham shiver. The roughness of the thrusts and softness of the kisses enough to make him go over the edge.
“Great, I’m going to treat you to all your favourites! Okay?”
“Hmm,” Alhaitham let out, mainly in response to Zhongli but Kaveh accepted it.
“I’ll see you soon! Love you.”
Alhaitham repeated the sentiment and switched off the call and hastily put his phone onto the desk.
He was glad that Zhongli had a strong grip on him because his back arched hard as he cried out loudly in pleasure, his orgasm consuming him. His cunt milking the cock that was continuing to fuck into him.
“Shit,” Alhaitham said as he rode his high and felt gush escape him rapidly and pool between them, spoiling Zhongli’s clothes. He had been on the phone to Kaveh with Zhongli around multiple times but never like this and while it was incredibly stupid, the impulse had overtaken him. He didn’t know if it was an infidelity kink or he was just a questionable person in general but he couldn’t deny the pleasure within him. Maybe he wanted revenge on Kaveh, or he wanted to show him what he should be doing instead of prioritising everything else. Alhaitham had had enough.
Zhongli appeared to have the same kink too because he pushed into Alhaitham as he came, his cock deep and releasing cum into Alhaitham’s womb. Alhaitham hummed and moaned as the cock spasmed inside him, filling him with hot cum.
Alhaitham pressed his lips to his professor’s again and pulled him close, now regretting that he couldn’t feel his skin on him. After minutes of swapping saliva, their kisses becoming filthier and filthier, they pulled apart.
Alhaitham should leave. He got what he wanted but he was greedy, and he wanted more. After a few minutes he climbed off Zhongli and rested his hands on the table, his ass up. Zhongli understood the invitation clearly and didn’t hesitate to spread Alhaitham’s cheeks and start licking at the arousal between his folds.
“Fuck,” Alhaitham cried. He felt sensitive still but didn’t care. Zhongli felt too good, and he was still so wet. Alhaitham started grinding his ass to his professor’s face, wanting to feel it deeper.
Zhongli pushed Alhaitham’s thighs wider and buried himself deeper into Alhaitham’s pussy. He pushed his tongue into his student’s sex and licked out his cum, knowing that he would cum inside him again. He used one of his hands to start rubbing Alhaitham’s clit, making him tremble as he continued to moan.
“Fuck, fuck, fuck,” Alhaitham chanted, his professor’s expert cum making him cum again. His body felt spent, but he didn’t care. He wanted more.
Quickly, he cried out again when his orgasm consumed him. He moaned loudly and unabashedly; the pleasure still as intense as the first time they had fucked. His arms shook and he collapsed onto the table but didn’t have any time to recover before, Zhongli flipped him, so his back was pressed to the desk. Zhongli lifted Alhaitham’s thighs to his chest and pushed his thick hard cock inside him.
Alhaitham whimpered, he felt so sensitive and drained, yet his pussy ached, needing to be filled with Zhongli’s cock again.
Alhaitham considered briefly that he anticipated that he and Kaveh might be having sex later, should Kaveh’s demanding schedule allow it. When they had first started dating their sex life flourished quickly and they rarely spent a night without the other, hardly being able to get enough even after all the hours they had spent pressed skin to skin. However, it had dwindled and Alhaitham’s sexual appetite hadn’t lessened. He knew that after now he would slide back into Kaveh’s bed and allow him to fuck him (and he hope that it didn’t only last 10 minutes). He loved sex and being filled again and again no matter who by would not get a complaint out of him.
Zhongli started with slow thrusts, making Alhaitham drool. His cock stretching his tight walls, his tip kissing his womb, the sensation making Alhaitham’s heart pound faster.
“Faster,” he pleaded, the position disallowing him from moving his hips himself. He was at Zhongli’s mercy and while it made him more and more wet, the slow thrusts made him feel like he would go insane. He wanted to cum again.
Zhongli moved his hands higher on Alhaitham’s thighs, pressing them closer to his chest so he could push his cock in even deeper. He felt how his student’s cunt kept squeezing his cock, milking him, his slutty writhing hips relishing on how he was being stretched and filled, the huge cock splitting him and only making him feel one thing.
Zhongli teasingly fucked his tip so it rubbed against Alhaitham’s sweet spots but it wasn’t enough to become undone. The bursts of pleasure alone making Alhaitham throw his head back and grasp desperately on the table caring little of Zhongli’s paperwork.
“Fuck me,” he whined.
“So desperate, getting late for your date because you want this so bad.” Zhongli continued his slow thrusts, glad that his age allowed him this much self-control. Otherwise, he’d give in to the primal urge that begged him to fuck his lewd and begging student hard and rough into the desk, making his erotic and flushed body shaking and quivering under him more than it was now.
“You’re getting fucked by two men and you’re still like this? Even after cumming on that toy and your fingers how many times in the last hour,” he purred, his voice making Alhaitham writhe. “If I’m not careful I fear you’ll find a third person.”
“Yeah,” Alhaitham said, taking the tease and running with it. “It might happen if you don’t start fucking me hard.” The threat didn’t sound serious with the hums of delight that accompanied every word. Zhongli huffed, amused. His student never failed to counter back to him, even like this.
“My pleasure then,” Zhongli drawled and started snapping him hips hard and fast into Alhaitham, making the desk shake and the room to be filled with the sounds of skins slapping.
Alhaitham mewled and held onto the back of his thighs to have something to hold but to also keep himself wide and open for his professor. He felt like he was being split, the force and pace of Zhongli’s onslaught disallowing any thought to remain in Alhaitham’s head apart from he was getting fucked and he felt so fucking good. Zhongli was great at sex from the get-go and the weeks of fucking had only made him better. He knew which angles made Alhaitham sob and exactly how hard and rough Alhaitham liked it and he always took it a step further.
“You’re so fucking big,” Alhaitham cried, his words punctuated with moans and whimpers. Tears escaped his eyes and felt fast on his face. “Too good… so fucking…”
“I know sweetheart,” Zhongli said, his eyes drinking in and engraving onto his memory the fucked-out expression on Alhaitham’s usually stoic face, his lips parted swollen and wet, his cheeks a bright shade of read, the wetness from his eyes as his irises neared his lids. Zhongli fucked him harder. “Beautiful boy,” Zhongli panted, his own groans falling from his lips. He made little efforts to contain them, knowing that there was hardly anyone around his hour and if they were his office door was locked and he would later play nonethewiser.
His eyes caught Alhaitham’s phone flashing again, Kaveh’s name on screen. He thought about accepting the call and leaving it on speaker so he could hear him fuck his boyfriend but he didn’t. He didn’t want this to end.
“Your boyfriend is calling again,” he grunted, feeling his impending release.
Alhaitham barely responded, his mouth unable to let out anything that wasn’t a moan. In the end he shrugged, Alhaitham didn’t know how much time had passed since the last call. He told Kaveh he would finish and then meeting and that is what he planned on doing. When words found him, he simply said, “make sure you cum in me.”
“Fuck,” Zhongli said. Alhaitham involuntarily clamped down onto him, he loved it when the usually polite man swore. “You really don’t give a shit, do you? Demanding another man’s cum inside you before you see your boyfriend.”
Alhaitham wanted to point out that they had done this numerous times already and Zhongli’s cum was so often in Alhaitham that Alhaitham was surprised that Kaveh was none the wiser especially with how much he enjoyed eating him out, but words failed him and he didn’t care about making comments now, he only cared about one thing.
Zhongli grabbed Alhaitham’s arms and wrapped them around his neck and picked him up off the desk, his thighs spread wide on top of Zhongli’s arms as he gripped his hips and fucked up into him.
“Fuck!” Alhaitham cried, the feeling of suddenly being weightless making his body want to soar. Kaveh was unable to pick Alhaitham up but here Zhongli was, effortlessly as if Alhaitham was just a plaything.
Zhongli’s hands lowered to Alhaitham’s ass, careful to leave bruises only where Kaveh already had and started thrusting his hard cock, the new angle allowing him to plough deeper.
Alhaitham clung onto Zhongli as he felt the full force of his thickness and length, the cock good for making Alhaitham’s moans and whimpers become louder and louder whilst he was wrecked. He moaned wetly into Zhongli’s ear, telling him how good he felt, how deep he was and begging him for his cum inside him.
When Zhongli felt his release, he pushed deep into Alhaitham adhering to his wish, loving at how he continued to beg for him even though cumming in him was a given anyway. His throbbing cock pulsated inside the tight wet warmth and making Alhaitham topple over into all-consuming pleasure again, his body convulsing and shaking as his greedy sex milked his professor for his cum and gushed again on his clothes.
Breathless, Zhongli gently placed Alhaitham back on the desk and he watched as pleasure continued to overcome Alhaitham again and again, his pussy squeezing his cock for every drop of cum it could. He stayed inside Alhaitham and pressed kisses to his skin, his mouth and tongue slow on him, as he moaned and moaned, the sound music to his ears and almost enough to keep him going for more.
When Alhaitham was lucid again, he groaned, his body sore but kept Zhongli inside him he pulled him in for a kiss, the soft kisses he had received in the mean time almost feeling like a mark on his skin.
After a couple of moments, he looked down at his phone, he had a missed call and Kaveh said that he was at the venue. “I’ve got to go,” Alhaitham said, this time meaning it. He pressed his lips together, regretful. “I’ll come over to yours on Sunday?”
Zhongli nodded with a smile and then pressed his lips to Alhaitham’s again.