Megan thought she had it all. A successful career, a beautiful home, and a husband who, even after years of marriage, still had the body of a twenty-year-old. Mark, her husband, was a PE teacher and part-time fitness trainer. His perfect physique and handsome face drew admiring glances everywhere, but he always seemed utterly devoted to Megan.

That devotion shattered the moment Megan walked into their bedroom. There, on their bed, was Mark, his tanned, muscular body splayed out, with an eighteen-year-old boy, Alex, on top of him. The sight froze Megan in place, a scream caught in her throat.

“Spread your fucking legs and show me that asshole,” Alex commanded, his voice rough. Mark, her Mark, obediently arched his back, exposing himself completely to the boy. Megan couldn't believe the man on the bed, moaning softly, was her husband.

“Slap!” Alex’s hand connected with Mark’s ass, the dark flesh rippling. Mark groaned, a sound laced with pleasure. “Lighter…please…”

“Lighter?” Alex landed two more sharp slaps. “Don’t play coy. You love this, don't you, slut? Just two days ago you were begging for it.” He punctuated his words by jamming a finger into Mark’s ass.

Mark’s entire body shuddered, his handsome face flushed crimson. His eyes glazed over as his chest heaved. “It’s…it itches…I can’t stand it…Alex…please…”

“What did you call me?” Alex shoved two more fingers in.

“Daddy…Daddy, I’m sorry…I was wrong…I need your cock…please, Daddy, fuck me…”

Alex pulled his fingers out with a pop, a string of wetness clinging to them. A cruel smirk twisted his lips. “Tsk, tsk. Mr. Mark, so strict in class, turns out he's just a whore for his student's cock. Who would've thought?” He pressed his own hard, dark cock against Mark’s entrance, rubbing it back and forth.

A whimper escaped Mark’s lips, the friction sending shivers through him. “The…the authority…it’s all an act…I’m just…a whore…I want my student to…fuck me…”

Alex let out a satisfied chuckle and thrust forward, burying himself deep inside Mark’s tight hole.

“Ahh…it’s…too big…gentler…” Mark gasped, his eyes squeezed shut, his face a mask of pleasure and pain.

"Oh god…yes…Daddy, you fuck me so good…ahh…your big cock is so deep…Daddy, you’re amazing…I can’t take it," Mark gasped, his body trembling uncontrollably, drool dripping from the corner of his mouth.

Alex pounded relentlessly into him for a solid five minutes before slowing down, then abruptly pulled out with a wet pop.

Mark, his body limp and pliant, felt the sudden emptiness behind him. “Why…why’d you stop…?” He instinctively reached back, his hand brushing against Alex’s cock.

“New position. On all fours, like a good dog,” Alex commanded, slapping Mark’s ass.

Mark whimpered, suppressing a moan, and scrambled onto his hands and knees, face buried in the mattress, ass high in the air.

Alex ran a hand over Mark’s smooth, firm ass, then stepped onto the bed and thrust back inside.

“Ahh…Daddy…you’re so good…your cock…so thick, so hard…it feels so good…” Mark cried out, lifting his head, gasping for breath, his pecs bouncing with each thrust.

“Fuck,” Alex growled, grabbing Mark’s pecs, his fingers pinching his nipples hard. “These tits…so big and perky…for a guy. You grow these just for men to play with, didn’t you?”

“Yes…I…I did…just for you, Daddy…ahh…that feels so good…I can’t…” Mark’s voice was a low, guttural growl, his face flushed, as if drunk.

Alex fucked him hard for another while, then pulled out again.

“Why…Daddy, why…?” Mark whimpered.

Alex smirked. “You might be enjoying it, but I’m getting tired. Can’t fuck you all day.”

Mark immediately crawled down between Alex’s legs, taking his slick, throbbing cock into his mouth without hesitation. “Daddy, you’ve worked so hard,” he mumbled around the thick shaft. “Let me help you regain your strength.”

Mark diligently serviced the hard cock until Alex finally sighed, “Alright, get up. I’ll lie down; you ride me.” He pulled his cock from Mark’s mouth, the tip twitching, leaving two streaks of precum on Mark’s face.

Alex lay back on the bed, arms spread wide, inviting Mark to mount him. Mark eagerly climbed on top, turning his back to Alex, and slowly lowered himself onto the waiting cock.

"Oh god…yessss…" The new angle hit a spot deep inside him, sending a jolt of pleasure through his body. His eyes rolled back, his mouth open, drool spilling onto the sheets.

“Move, slut!” Alex barked.

Mark raised his hips, forcing his aching body to obey, then slammed back down, his own cock dripping precum onto the sheets.

“Don’t let those hands go idle. Play with those pretty tits,” Alex commanded.

Mark’s hands trembled as he pinched and pulled at his own nipples. “Ahh…so deep…so good…I can’t…I’m gonna…” A wave of pleasure washed over him, and his cock erupted, spurting thick ropes of cum onto the bedding.

“A cumdump whore. What good is your cock?” Alex snarled, grabbing Mark’s arm and pulling it back, increasing the pace of his thrusts.

“Daddy…I’m…I’m close…clench tight, slut…don’t spill a drop,” Alex groaned, building to his own climax.

“Ahh…Daddy, your cock is so hot…I’ll swallow every drop…fill my slutty hole…” Mark squeezed his ass tight, his body bucking and jerking as Alex pounded into him.

"Cum, whore!" Alex roared, burying his cock deep inside Mark, unleashing a torrent of cum.

After the tremors subsided, Alex sat up, lazily leaning against the headboard. He beckoned Mark closer. Exhausted, Mark crawled over, resting his head between Alex’s legs and dutifully began to clean the sticky mess from Alex’s cock. His ass twitched, but he remained focused, not wanting to spill a single drop of his lover’s cum.

Megan covered her mouth, tears streaming down her face. She couldn't believe the wanton man on the bed was her usually tender, outwardly masculine husband. Grief battled with dawning realization as she finally recognized the boy: Alex, the student who’d started visiting their home frequently six months ago…

“Gentler? Is that what a slut like you really wants?” Alex gripped Mark’s hips, driving into him with brutal force. Mark’s ass flattened with each thrust, only to spring back, slick with their combined fluids.

Eight months ago:

“Alex, what the hell do you think you’re doing sneaking around? Get over here!” Mark’s voice boomed across the Sunnyvale High School athletic field. He’d spotted Alex trying to slip away.

“Shit.” Alex had been planning to ditch school and head to his friend’s new bar. Busted. He flipped Mark the bird, then reluctantly trudged back toward the group of students. It wasn’t that he was scared of the PE teacher, but Mark could be a real pain in the ass. And today, Alex just wasn't in the mood.

Mark sighed inwardly. Alex, with his rich family and their generous donations to the school (two whole buildings!), was constantly causing trouble. The administration turned a blind eye, leaving Mark to deal with the spoiled brat.

“Alright, everyone, line up! We’re going to start with some warm-up exercises.” Mark stood in front of the students and began demonstrating stretches.

Alex half-heartedly swung his arms, his eyes fixed on Mark. The grey athletic shirt Mark wore clung to his broad chest and shoulders, accentuating his perfectly sculpted physique. With each movement, Mark’s pecs rippled and flexed, the friction of the fabric causing his nipples to harden and press against the thin material. Below the defined chest, the outline of Mark’s eight-pack abs was clearly visible beneath the tight shirt.

Alex’s gaze lingered on Mark’s chest, then drifted lower. The charcoal grey leggings Mark wore hugged his muscular legs, the bulge between his thighs impossible to ignore. Alex wasn’t the only one stealing glances. Mark shifted uncomfortably. He’d forgotten to do laundry and had resorted to wearing his gym leggings to class. He turned his back to the students, demonstrating some torso twists, inadvertently showcasing his round, firm ass. The leggings stretched taut across his glutes, the seam disappearing into the cleft between his cheeks, leaving little to the imagination.

Alex swallowed hard. The teacher was a prick, but damn, he was hot.

Mark felt the heat of Alex’s stare and straightened up, feeling self-conscious. “Okay, that’s enough warm-up. You’re free to practice.” He quickly headed off to change. Alex watched him go, absently rubbing his own hardening cock.

Later that evening, Alex arrived at his friend’s bar. He was immediately greeted by a backslapping hug. “Dude, you said you’d be here this afternoon. What took so long?”

“That horny-ass PE teacher at school stopped me from leaving,” Alex grumbled.

“What? Some teacher’s got the balls to mess with you? Want us to go teach him a lesson?”

“Fuck off. You guys stay away from my school.”

Just then, a group of scantily clad women entered the room. Alex’s friends eagerly pulled them onto their laps, hands roaming freely. Alex, however, pushed the girls away and sat back, picking at a bowl of fruit, his mind wandering back to Mark. Alex preferred men, especially big, muscular ones.

He overheard a conversation nearby. “Let me tell you about this new shit I got from overseas. It’s not your typical boner pill. It’s slow-release. First, they start digging your scent, then they crave your touch, then they’re practically begging you to fuck them senseless. Works every time. I’ve used it on so many uptight bitches…ha ha ha!” Alex’s ears perked up. He walked over to the guy. “Hey, that stuff you’re talking about…think I could get some?”

Several days later.

Mark stood up from his desk, about to head to class, when Ms. Chen, the English teacher, walked in.

“Heading to class, Mark?” she asked, her eyes lingering on him a little longer than necessary.

Ms. Chen was twenty-five, in the prime of her life, with a killer body and a deceptively innocent face. She had a reputation for attracting admiring glances from both students and staff.

“Yeah, got a class next period,” Mark replied, stepping aside to let her pass. As she swayed past, he couldn’t resist giving her ass a firm squeeze.

“Oof!” she yelped, turning to glare at him, but the blush creeping up her neck betrayed her true feelings.

Despite the respectable, faithful front he put up for Megan, Mark often indulged in these little flirtations, confident in his good looks and physique. He and several of the female teachers, and even some of the gym’s more attractive clients, engaged in this playful, slightly risky game.

Mark grinned and continued on his way to class.

This period, he had the students playing basketball. Feeling the heat, he ripped off his tank top, tossing it onto the sidelines. Sweat trickled down his neck and chest, his pecs rising and falling with each breath, nipples already hard. His tanned skin, sculpted muscles, and defined abs drew appreciative looks from both male and female students.

Unseen, Alex sidled up to Mark’s water bottle, discreetly adding a white powder to the contents. He retreated, a smirk playing on his lips as he watched Mark drain the bottle a few minutes later.

Lately, Mark had been feeling…off. He couldn’t quite put his finger on it. He’d even gone to the doctor, but all the tests came back normal. Probably just stress, he thought, sitting at his desk. Ms. Chen approached him, her voice a soft whine. “Mark, you’ve got to do something about Alex. He’s been absolutely dreadful…” She proceeded to list Alex’s latest offenses. Mark frowned. “He has been getting out of hand. I’ll talk to him.” Ms. Chen beamed, glancing around to make sure they were alone before leaning in, her breasts pressing against Mark’s arm. “Thank you, Mark. You’re a lifesaver.”

Mark registered the soft pressure, but felt strangely unmoved, which unsettled him. He pulled away. “Sure, sure. I’ll go find him now.” He quickly left his office.

Mark stalked through the hallways, eventually spotting Alex. He pulled the boy into a secluded corner. “Alex, do you have any idea how upset you’ve made Ms. Chen?” He launched into a reprimand.

Alex remained impassive. When Mark paused for breath, Alex offered him a bottle of water. “You sound thirsty, Mr. Davis. Here.” Mark glared, but accepted the bottle, drinking half of it in one long gulp. “Stay here and think about what you’ve done,” he instructed.

A few moments later, Alex said, “Mr. Davis, I’m kind of hot. Do you mind if I take my shirt off?” Before Mark could respond, Alex had already peeled off his t-shirt.

Mark opened his mouth to scold the boy, but the words died in his throat. His eyes were glued to Alex’s body.

Sixteen-year-old Alex was still growing, nowhere near Mark’s size. His skin was darker than Mark’s, his biceps and abs less defined, almost skinny. He had a couple of scars, a patch of dark hair on his stomach that disappeared below his waistband. Despite his slight frame, there was a raw, masculine energy about him.

Mark’s mouth suddenly felt dry, even though he'd just had a drink. He couldn’t tear his gaze away from Alex’s torso.

“Mr. Davis? You were saying?”

“Uh…nothing…it’s…fine…” Mark forced his eyes away, only to land on the prominent bulge straining against Alex’s pants.

Mark swallowed hard, his breath catching in his throat. He tried to regain his composure, but then Alex spoke. “Mr. Davis, I’m still really hot. Maybe I should take my pants off too?”

Mark’s heart pounded in his chest. A strange anticipation fluttered in his stomach. “That’s…not really appropriate…here at school…” he stammered.

“Oh, come on. It’s just us guys,” Alex said, unbuttoning his pants and letting them drop to the floor. He was wearing low-slung boxers, a line of dark hair visible above the waistband. Freed from the constraint of his pants, his erection strained against the fabric, pushing it out at an angle.

Mark barely registered anything else. His eyes were fixed on the impressive bulge outlined by the thin material, his mouth slightly agape.

“Mr. Davis, why are you staring at my crotch?” Alex asked, a knowing smirk on his face.

Mark flushed, stammering, “I…I wasn’t staring…at your…crotch…”

“Oh?” Alex placed a hand over his boxers, stroking himself lightly. “Don’t be shy, Mr. Davis. It is kinda big. People stare.”

“Uh…yeah…” Mark’s mind felt foggy.

Alex stepped closer. “You wanna touch it?”

Mark’s head swam as Alex moved closer. The scent of sweat and arousal, usually repulsive to him, now seemed intoxicating. He tried to cling to his last shred of sanity. “Alex, what are you…get back…stay where you are…”

Alex ignored him, taking Mark’s hand and placing it over his bulge. “Here. So you can get a better feel.”

The moment Mark’s fingers brushed against the hard length, a jolt of electricity shot through him. His knees went weak. He instinctively began stroking the hard cock beneath his palm as if it were some precious treasure.

Alex moaned softly at the rough caress of Mark’s hand, a triumphant grin spreading across his face. “You can’t really feel much through the fabric, though. Maybe you should take them off?”

Mark’s face burned. His trembling hands slowly pulled down Alex’s boxers. A thick, dark, veiny cock, glistening with precum, sprang free.

Mark stared at it, the musky scent filling his nostrils, his mind reeling. Nine inches of pure, hard cock, right there in front of him.

Alex’s smirk widened. “Wanna get even closer, Mr. Davis?”

Mark hesitated, then actually began to lower himself to his knees. Halfway down, he suddenly snapped out of it. He scrambled to his feet, a mixture of shame, anger, and a confusing sense of arousal flooding through him. He couldn’t bear to look at Alex. “You…you better get to class,” he mumbled before turning and practically sprinting away.

Alex watched him go, his eyes narrowed, a predatory smile playing on his lips.

To be continue.