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Sorry for the LONG delay. I have been busy. Real life gets in the way some times. And I am also trying to change my health/lifestyle by becoming something like the characters and the big muscle men of this forum (Have a progress thread in the Watch Me Grow section if anyone has not seen that, not the hottest guy yet, but working on it), so please forgive me for the delay... I now present you with the next part of this epic series...

 

Part 03

Gym Time

Andrew headed upstairs to take a shower after Matt decided to head out to the gym in a rush. His body was covered with sweat and his muscles and bones ached for some reason, almost like he worked out all day, which he never worked out a day in his life. The weirdest thing though was the stench lingering in the air surrounding him.  It wasn’t a strong smell, but it was something that Andrew also was not used to, musk. Maybe it was just Matt’s sweat and odor rubbing onto him from the encounter they just shared in the kitchen.

As Andrew finished up in the shower he headed to the room he shared with his brother. He made his way to his closet and grabbed a shirt out of it, pulling it off the hanger. As he pulled it over his head there was a tightness around his chest and arms. “Weird,” he pulled off the shirt and grabbed another one, and it was the same tightness. He kept trying on shirts. Over and over he pulled them off till there were a pile of them littered on the floor around him. “What the fuck?!”

Andrew drops the last shirt he tried on to the floor, looking down at himself. He finally notices the changes he went through. Abs he never had pushing out from under his skin, not much yet, but there was a definite view of a four pack as he rubbed his fingers across each stepping stone of flesh. His pecs were firming up as he moved his hands to them next, which he then finally noticed a ball of muscle popping out from under his upper arm where a bicep would normally be on a man that had muscle, which Andrew clearly now possessed.

Andrew’s cock began to harden. He moved to his dresser and grabbed his swim shorts. “Might as well go for a swim with a body like this,” he pulled them on and headed out to the pool.

 

****

Matt finished up his daily morning classes. All throughout his lecture though he kept thinking back to the morning he just had with his brother. That blow job was intense, nothing like he had ever experienced before. His cock kept getting hard thinking about it, actually popping out of his jock and traveling down the leg of his pants. He had to make several shifts in his seat just to make sure his mighty cock was not seen by his other classmates.

Class had ended though and he was at the gym, eager to start his workout and get his mind off of his brother. Matt quickly made his way to the locker room and changed out of his regular casual attire, pulling on a tank top and a gym shirt. They were a bit awkward on his large frame, almost as if they were a bit loose, especially the tank top. Maybe he stretched it out over the few weeks he wore it to the point it was at this loose fitting.

Matt headed out to the workout area, eager to finish up before lunch. He threw himself on a weight bench, starting his usual reps but he seems a bit off. Getting up he lowers the weight and manages to do a few before getting tired rather quickly.

“Need some help, runt?” Matt’s buddy Dan almost appeared out of nowhere, grabbing the bar right in the center. “Come on, Matt. I’ll give you a spot. You look like you might need a little help today.” Dan was always a bit shorter and a bit less built, standing at 6’4” and weighing 285lbs. Today though, Matt seems to see Dan as a bit bigger than normal, almost as if they are close to the same size.

Matt shakes off his delusions and continues his workout as he decides to take Dan’s help for the remainder of his session; spotting one another on their sets, but Matt tires out on each of his sets as the weight is a bit too heavy for him now.

Dan wraps his arm around Matt’s shoulder as they finished up their workout. “Bad days happen, Bud. I’m sure you’ll kill it tomorrow.” Matt nods at Dan, a bit annoyed as they make their way into the locker and strip down for their shower.

Dan moves under a shower head right next to Matt and turns the handle to start up his shower head. He begins to soap up his hairy, beefy chest with the soap provided by the gym. Matt watches on as the water sprays down on himself, his cock still hasn’t gone down all day from his earlier sexual encounter with Andrew.

Matt begins to stroke his cock to try and relieve himself, the steam of the hot water making it hard to see what was going on with the two of them.

Dan begins moving the soap down to his abs, when the bar manages to slip and slide across the floor. “Fuck…” Dan bends down trying to feel for the bar with all the rising steam and heat rising to the ceiling around him

As Matt continues stroking, he notices Dan’s form on the floor; his beautifully sculpted muscular ass on on fours right in front of him. His ass cheeks parted slightly with a dusting of dark hairs pushing out of his cracks. As he manages to reach it, it slips out of his hands a bit farther across the floor. “Mother Fucker!” As he moves and bends forward, his ass flexing and cheeks opening up a little more and exposing his hairy puckered, spasming hole.

Matt and Dan had fucked around before. What once started as bros in the gym quickly became into several sexual encounters, both drunk on their own masculinity and testosterone. Never had the thought crossed Matt’s mind though to do anything in the gym. But that ass, right in front of him, begging to be fucked. Matt’s dick was rock hard and raging with lust, there was only one clear course of action.

Matt took a step forward, grabbed Dan’s hips, and slowly pushed his cock into his friend.

“NGH, WHAT THE FUCK, BRO?!” Dan started breathing heavy, surprised at this quick action from his friend. He straightens up immediately, gasping in shock, his ass muscles clenching tightly around Matt’s throbbing dick.

Matt pushes his cock deeper into Dan, wrapping his powerful arms around him, pulling his friend against him in a crushing grip. “You trying to drive me nuts, dude?” Matt growled in pure bliss. “You, bending over like that? Shoving that ass in my face while I’m hard as a fucking rock and trying to beat off in peace?”

Dan snarls in protest. “FUCK YOU, BRO! I DIDN’T…”

Matt slams his hips forward violently, driving his cock all the way into Dan with one brutal thrust. Dan gasps, his words dying in his throat. Matt pushes Dan up against the wall and starts pumping his dick into him hard; Dan’s own stiffening member slamming into the tile wall each time Matt crashes right back into him. A low groan of lust escapes Dan’s lips as he begins to enjoy it.

“That’s it,” Matt purrs into Dan’s ear. “I knew you’d love this…” he begins pumping his dick faster into him, brutally fucking him against the shower wall, the hot spray of the water falling on them both as they grunt and groan in animalistic passion.

Dan’s ass begins to clench tighter around Matt’s cock as a moan finally escapes his lips. Matt’s arms reach around, under him, and lock against his abs. Dan begins to push backwards, pushing his ass onto Matt’s cock as he begins to enjoy as he begins to really enjoy this sexual experience that started with Matt forcing himself onto him. Matt’s thrusts are vicious, like a jackhammer pummeling pavement as he extracts his cock to the opening of Dan’s hole before slamming it right back in like a piston. Each time, they meet each other half way; Matt pushes in, Dan pushes back. Matt’s balls slapping Dan’s cheeks with such force, it causes a slap so loud it can be heard across the entire shower room.

“Uhn…FUCK… I… I…” Within seconds, Matt practically snarling and grunting in triumph, begins to fire his hot seed into Dan, driving his dick all the way in to the hilt as his cock literally begins to spasm and go wild, pumping a surprisingly large load of cum into him.

Dan begins to tense all over, every muscle flexing as he growls and grunts along with Matt. As Matt holds onto Dan, his powerful arms wrapped around his torso, he begins to slowly feel his arms getting pushed apart. Matt looks down at Dan’s back in confusion; Dan’s traps are flexed hard, throbbing, and slowly growing bigger as they rise into mountains of muscle. Matt’s eyes widen as he watches not only them rise, but the section of his back begins to move upward as well. Not only is Dan gaining more muscle mass, he’s growing taller as well.

Matt’s grip around Dan’s torso breaks, his hands sliding farther and farther apart as he lifts his arms up trying to hold onto him. He rakes his fingernails across Dan’s chest, noticing that it fels thicker, fuller. Even Dan’s ass around Matt’s cock feels different, the glutes getting bigger, stronger, the target zone of his ass rising further and further off the ground with each passing second.

Dan finally unclenches his glutes around Matt’s cock, making Matt stagger back, pulling out of his friend with a loud pop. Dan stands still for a moment, slowly turning around to face his friend. “How?” He looks himself over. “Did you?”

Matt’s jaw drops. Dan is easily three inches taller than he was before, maybe four. Well over 300 pounds of pure masculine beef, possibly 330 pounds, or even more. He smirks at Matt, the hot water of the shower washing over his massive muscles.

 Dan reaches down for Matt’s body, but Matt shakes out of his daze and rolls out of the way. Dan is much bigger now then Matt, but he is not used to the new size and weight of his body making him a bit clumsy. “Where you going Matt? HAHAHA…” His laugh echoing off the walls.

Matt get up onto his feet, backing towards the door to the locker room, not taking his eyes off of his enormous friend.

“Ah come on, Matt! Can I fuck you now?” Dan grins from ear to ear, feeling much more confident. He takes a step toward Matt.

Matt grabs his towel from the partition wall and holds it against his waist, making it into the locker room as quickly as possible, now filled with more people changing. Matt makes it to his locker, grabbing his clothes and quickly throwing them on as Dan enters into the locker room, scoping out the area for his prey. Dan’s so confident of his new body he doesn’t even care to cover himself.

Matt manages to get one last glimpse of Dan now in clear focus; he’s a fucking monster. Cock close to 12 inches long and bouncing like a compass as it sways from side to side as he continues to scout out the room looking. “Anyone seen Matthew?!” People just stare in awe, no one saying a word as Matt manages to slip out the door into the main gym area, fully clothed, as he makes his way to the exit to head home.

 ***

Matt makes it back home, not sure what just really happened back at the gym with his friend Dan. Part of him wanted to believe it was all some hallucination on his part, but he knew better. He did not just see him grow, he had FELT him grow; right under him as he fucked him. The moment after he came into him, he just started to get bigger, and not just a tiny bit, but a lot bigger.

Matt began to shudder as he remembered how Dan wanted to fuck him with that huge dick. Dan had never been so large before but now… he tries to put it out of his mind as he gazes out the window to the back yard, noticing Andrew in the swimming pool, his twin’s arms cutting the water with clean strokes. Matt goes outside to get a closer look. He pauses for a second on the grass, noting Andrew’s shoulders, how they looked a bit more defined, a bit more muscular. The wetness of his brother’s skin showing the definition a bit better as the sun reflected off of him.

Matt walks over to the pool, setting down his gym bag. “Hey Andrew,” Matt watches as his brother reaches the edge of the pool. “You been swimming much lately? Looks like it’s doing you good.” Although part of Matt was wondering if it might have been something else that was changing his brother.

“Nah, Matt. I just felt like going for a swim.” Andrew looks up at Matt from the water, smiling at his bro, placing his arms over the side of the pool.

Matt notices the bulges in his brothers arms and shoulders as the water slides off of his brother’s body.

“What’s wrong with you though, Matt? You look like you saw a ghost or something.” Andrew propels himself off the wall, swimming towards the other side on his back. Matt notices the definition in his brothers chest and the feint appearance of what looks like the beginning of a set of abs. Blond hair sprouting across his brothers arms and legs.

Matt sits down on a chair near the pool, watching Andrew do laps. Noting the new muscle definition, the way the muscles move under Andrew’s skin with each stroke. He remembers that morning, Andrew drinking down his cum, and then thinks about what just happened to Dan at the gym. Clearly there’s a connection, and it seems like that connection might be connected to his cum.

Matt stands up and heads inside, taking his gym bag with him and tossing it into the corner of the living room. He walks up to the second floor bathroom, stripping completely, stepping onto the scale. 285lbs…

Matt nearly chokes. He was 300lbs yesterday. No one loses 15lbs instantly. Not water weight. Not muscle weight. And not fat. It makes absolutely no sense. Matt put his clothes back on and headed back to the living room. He takes a seat on the couch, staring at the TV, not bothering to even turn it on.

Andrew finally finishes swimming and goes back inside, drying himself off as he takes a seat next to his bro on the couch. “Are you ok man? You aren’t acting like your normal self.” Andrew playfully punches Matt on the shoulder. “You came home from the gym, looked at me weird, and then just jetted back inside. If it is something I did, you can tell me. We are brothers.”

Andrew places his hand on Matt’s shoulder, moving his other hand to Matt’s fuzzy, bearded cheek, turning his face to look at him. There was sadness in his eyes. “Hey, bro… We were born together. We have a connection unlike other bros unless they were twins like the two of us. Whatever is going on with you, I am here for you, and will always be.

Matt looks down at Andrew, smiling softly. “It’s nothing, Andrew. I just had a lousy workout, that’s all. Wasn’t up to my usual weight and reps on anything. So I’m just a bit bummed.”

Andrew doesn’t quite know how to take that response. It sounds truthful, yet it also seems like his brother might be holding something back. Matt wraps a powerful arm around his shoulder, pulling Andrew in closer. “Only thing you did was give me a great BJ this morning, okay? So don’t worry about it. I’m cool.” He rubs the back of Andrew’s head affectionately.

Andrew leans into Matt’s larger mass, breathing in the musk and cleanliness of the shower he took at the gym. Andrew’s cock begins to stir again, now that he is so close to his twin. “Damn, Matt. What I would do if we were identical twins. I wish I was as big as you. As manly as you… even your scent bro.” Andrew turns his head slightly to get a whiff of the scent of his brother’s armpit. “You really comfort me.”

Matt blushes a little, but obligingly lifts his muscular arm a bit, letting Andrew have some access to nuzzle his furry pit. Even though he showered just a bit ago, his manly musk was already coming back, due to how quickly he had to rush out of the gym and also his natural pheromone musk. “If we were identical, I suspect that we’d never get anything done. We’d be busy fucking each other’s big muscle butts all the time!” Matt began to laugh, bringing his arm down across Andrew’s shoulders again. “Since that isn’t the case, we’ll just have to make do, I guess.”

Andrew leans into Matt a bit more. His eyes growing heavy from the comforting smell and embrace of his twin as he dozes off to sleep. Andrew content, and happy to know that his brother who he thought he had lost from when they were kids is slowly proving to him that they still are connected.

Matt just sits there, listening to the slow breaths of his brother; sleeping in his warm arms, his head snuggling against his inner pec muscle with his large arm wrapped around him…

To Be Continued...

Coming Soon: Part 04 – Want Me, Want You

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1 hour ago, spacevlad said:

Mmmmmph that scene with Dan was hot! I kinda wanted him to grab Andrew and fuck him hard and get more growth-inducing cum from Andrew!

You mean Matt. Glad you liked it. As for an Andrew and Dan scene... keep reading. ;)

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21 minutes ago, godofjurai said:

You mean Matt. Glad you liked it. As for an Andrew and Dan scene... keep reading. ;)

Ha yeah I meant Matt. Cool about Dan and Andrew interacting at some point! This probably won't happen but it would be great to see Dan get even bigger! But Andrew growing is hot too.

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On December 10, 2016 at 2:08 PM, Ro20316 said:

Huh. I did noticed but i thought he was gonna start loosing in the next chapter.

He lost some muscle but it wasn’t transferred.  One of the brothers cum shrinks people, and the other's makes you grow.  They haven’t quite figured it out yet. Send Matt my way, please.

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10 hours ago, skumbum said:

He lost some muscle but it wasn’t transferred.  One of the brothers cum shrinks people, and the other's makes you grow.  They haven’t quite figured it out yet. Send Matt my way, please.

Correct, his muscle loss was from part 02.

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