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This part I am sure is one of the bigger parts of the Original RP people wanted... I hope I did this justice... There is a very ORIGINAL way I did the theft in this part, which was what I think people enjoyed the most. Also there's a bit of an easter egg to a few other theft stories. Enough chatter, I hope you enjoy this part.

Previous Parts:

-Part 01 - Part 02 - Part 03 - Part 04 Part 05 -

 

Part 06

Risk Takers

Matt wraps his large arms around Andrew in a tight embrace. “You won’t lose me, bro. I’ll always be your big lunk of a gym rat brother.” He notices the warmth of Andrew’s body up against him; his size much bigger and solid than what he’s been used to before. Even though Andrew is still quite a bit smaller than him, Matt can feel the difference of his smaller twin’s body size. It felt so good actually he began go become a bit more attracted to Andrew’s new size.

“You know…” Matt pauses a second, swallowing the lump in his throat. “If we used rubbers, the cum wouldn’t touch…” Matt takes a deep breath, proud of the thought but also nervous on Andrew’s overall reaction. “We know that it’s the cum itself that is making these changes – the cups proved that. So all we have to do is use some condoms, and we can fuck all we want without having to worry.” Matt chuckles nervously, squeezing Andrew a bit more firmly, pulling him in tighter into his body.

Andrew looks up at Matt, a bit of a happier tone spread across his face at this new revelation that his twin has proposed to him. “That actually sounds like a great idea!”

Before Andrew could even finish his sentence, Matt had his brother scooped up and in his arms. The effort he put into it was a bit of a struggle at their new sizes, but Matt made sure to get in a comfortable position for himself to carry Andrew; up the stairs to their room, where Matt gently places Andrew onto his bed.

Matt runs his hands over Andrew’s body, taking note of the new muscle that has formed under his brother’s skin. “Gotta admit, Andrew, watching you grow like that was pretty fucking hot.” Matt smirked down at Andrew, groping his hardening bulge in his shorts, before pulling them down his thighs as they dropped to the floor which he kicks off of his feet and pushes them aside.

Matt crawls on the bed between Andrew, his eight rock hard inches at full attention. Reaching out, gently gripping Andrew’s thighs, rubbing them up and down before slowly pushing them apart. Matt reaches over Andrew to his nightstand, pulling the drawer open and grabbing one of the many condoms inside.

Smirking down at Andrew seductively, he puts the condom package to his lips, ripping it open with his teeth as he pops the latex sheath out of its wrapper and slides it over his hard dick. He takes note that it’s not quite as tight as he remembered it used to fit him. Matt shook off the unwanted feeling of his smaller self as he grabbed a tube of lube from the drawer, applying a generous amount to slick up his rubber-clad cock.

Matt begins to tease Andrew’s hole, prodding it with his finger, applying a bit of lube to make sure he was ready to take him fully. “I’m gonna give you a good fucking, bro. Show you I’ve still got it, even if I’m a bit smaller than before.

Andrew moans loud in pleasure as Matt’s finger probes his hole, opening him up for the incoming invasion. “Please be gentle… I haven’t done it before, bro.” Andrew’s hole was tight, and spasming; his ass clamping down tightly on Matt’s lubed finger. “I’ve wanted this for a long time though, bro. I’ve wanted you to Want Me, like this…”

Matt feels a bit uneasy at those words, a chill running down his spine. He leans down slowly, kissing Andrew, removing his finger from his tight hole. His lubed up cock, covered by the rubber, is achingly hard. Matt leans forward into Andrew, making sure to press the head of his mushroom tip against his brother’s hole. The tightness of Andrew and the feeling of being opened up by Matt causes them both to moan in unison.

With a soft moan, Matt slowly pushes his cockhead into Andrew’s very tight hole. He watches Andrew wince a bit in pain and grunts; Matt leans in to comfort him, pushing his lips onto his twin’s in a deep kiss. His mouth engulfing Andrew’s, tongue forcing its way between his lips and teeth.

Matt growls into the kiss, pushing his cock in half way before feeling Andrew tense up more under him, his bro’s hole clamping down on the four inches inside him. Matt pauses for a moment, giving Andrew a chance to adjust to his size; even at eight inches, he’s still quite the hung stud. As he keeps his dick half inside he moves his mouth down Andrew’s face, to his jaw, then his neck, nuzzling against his brother’s ear before teasing it with his tongue.

Andrew moans as his body is relieved of some tension, his hole relaxing a bit more, as he gives permission for Matt to proceed further. His hole opening up, Matt pushes in further, loving the groans and moans that escape Andrew’s lips.

“Oh yeah,” Matt moans, feeling his thin pubes press against Andrew’s round muscle ass cheeks as he finally reaches the end, his cock fully pressed into his bro. “Fuck you got a nice ass, Andrew.” His breathing more labored as their bodies are pressed firmly together.

Matt lifts Andrew up off the bed, letting his slightly smaller twin wrap his legs around his waist; Matt’s cock moving and shifting inside of him as they changed sexual positions. Matt moves over to his desk, sitting down on it. He places his hands on Andrew’s ass as he begins to lift his brother up and down on his cock in a steady rhythm.

Andrew moans more and more with each thrust up and down Matt’s shaft in pure pleasure. Every time he is dropped to the base of Matt’s cock he gasps as he feels the large phallus leaving him as he is lifted back up the shaft towards the large head, just to start his long moan as he is lowered again.

Andrew’s cock is rock hard and slapping firmly against Matt’s abs as Matt holds him close to his chest. Something then snaps in his own mind right then, the consequences if Andrew was to cum now without something blocking his spunk would be very bad. “Matt… Fuck… nnn… This….Is…A… Bad… Position…” Andrew manages to get out as Matt pounds into him, steadily speeding up his rhythm as he begins to go faster… and faster…

“Mmm, Fuck no, Bro! This position is fucking amazing!” Matt growl’s holding Andrew steady as he slams his dick up inside of Andrew, roughly fucking his twin, loving the way Andrew’s lust is evident from his panting and grimacing facial expressions; the way Andrew’s cock hits his abs over and over as he fucks him hard, yet passionately.

Matt’s own ass begins to rise up off the chair slightly as he tries to drive his cock in even deeper if it could even be possible; spreading his strong muscular legs wider, leaning back against the desk, driving his dick up into Andrew as he holds his bro in position.

His balls begin to ache, he wants to fill Andrew up so much with his love, but they seem to tremble and swell as they begin to cause him pain. Matt snarl’s angrily, desperately wanting to cum as he begins to fuck Andrew even harder, roughly thrusting up into his twin, muscles tensing and flexing with extra effort as beads of sweat begin to form on his skin.

Andrew continues to be tossed around, enjoying the pounding as he notices Matt’s face begin to turn red, as he finally cries out in agony, desperate for relief. “Ah, Fuck… Please Matt…” he moans into the rhythm.

With a loud cry of pain and pleasure, but pure ecstasy, Matt explodes. “AH FUCK!!!!” Pushing deep inside, Matt feels his dick spasm wildly, the big rod rocking about wildly as his seed continues to erupt from his shaft, filling the condom. The reservoir tip beginning to fill… more… and more…

There is so much cum rocketing forth, Matt feels like his cock won’t stop, but he realizes it’s not his choice, it’s something more. Matt’s Symbiote controlled balls are working in overdrive, filling the tip of the condom, making it swell larger and larger inside of Andrew as it continues to fill with Matt’s splooge.

“Oh fuck, Matt…” Andrew’s eyes go wide as the rubber reservoir tip expands so much it ruptures inside of him, flooding the enhanced cock cream throughout Andrew completely. As soon as it breaks and flows into him, it’s immediately absorbed, but this time Andrew isn’t warmth spreading over his body; heat begins to fill him, a fire.

Every muscle in Andrew’s body begins to tense up all at once, flexing hard against an unseen resistance. “FUCK! THIS…IS… HUGE!” Andrew’s height shoots upwards, almost instantly he is four inches taller, his shoulders broadening wider to provide new space for the muscle that is pumping out from under his skin. Every fiber of his being tensing as he gets bigger everywhere, the veins making a road map to every part of him as they pump with blood and begin to be seen without even a flex. Fifty pounds of solid mass was just added to him in mere minutes, and the show was just starting.

Andrew’s own cock, six and a half inches of rock hard meat expands upwards and outwards, throbbing madly as it added one more inch of length and bloated thicker to accommodate his new size.

As Andrew’s growth begins to subside, his body bordering on close to Matt’s size now, their bodies even closer than ever, his cock begins rubbing against the ridges of Matt’s abs. As it grew longer and thicker, his body becoming closer to perfection like his larger twin, he begins to gaze at himself in awe from these new changes, the pressure in his own balls begins to come to a head and spill out.

As Andrew tries to move up off of Matt’s cock, his body has it’s own desires as his now perfect muscular bubble butt ass latches down on Matt’s cock, “FUCK!!!!” Andrew’s cock explodes! The load firing up into the air as it lands across Matt’s face, chin, and chest. There is nothing else he can do now, but to wait.

Andrew wraps his larger arms around Matt, as his cock fires again, his brain going into protective mode, as all he wants to do is hold onto Matt, not realizing his cock is still firing off between their bodies as Matt begins to shrink a bit more. “No…. no no no no no!” Andrew holds Matt tightly as he sits on his cock still balls deep. Their eyes meeting for the first time since they were kids.

Matt looks straight across, eye level to Andrew. But it seems a bit off, his eyes may be even a bit lower, but that’s not really surprising since Andrew is still impaled on his dick. Before he came, Andrew had to tilt his head down to look at him, this new status change had him slightly tilting his head up.

“Damn Andrew,” he croaked, words a bit slurred. Matt reached up and tries to pull Andrew off of his tool, but Andrew is now too big, too heavy. 200lbs of pure beef sitting on his lap. Matt’s ass touches down on the chair, his trembling legs no longer able to hold up his brother’s weight as easily as he was able to before. “Fuck… you look good…” Matt finally takes in the full size and weight of his twin. His larger muscles, his masculine rock hard hairy chest, his powerful shoulders, and his vasularly huge arms.

Andrew lifts his ass up off of Matt’s cock, pulling the obliterated latex condom out of his hole. “Look at me, Matt.” He walks over to Matt’s large mirror that he had installed to check his own perfected body out in. Andrew lifts his right arm up, flexing, watching the ball form of his bicep. He brings his other arm up and shows off a most muscular for Matt. Seeing the tightness of his six pack and much larger pecs. Andrew in a matter of minutes has went from a jock built to something more like an amateur athlete.

Andrew moves his hand down his furry chest, crossing his hairy covered abs till it meets his cock, which now looks much more adequate with his thick pubic bush. He gives it a squeeze, as he notices Matt looking at him through the mirror. Andrew spins around to face his twin. “No more, Matt…”

Matt shivers with desire as he watches Andrew flex and pose and feel up his bigger body. He slowly stands up, walking up to his twin. He’s still taller, but only barely. One inch at most. He also has a slight bit of muscle still on his once tiny bro, but maybe only about twenty pounds if that.

Matt brings his own arms up and flexes, his biceps rising up proudly under his skin – he’d still be impressive to anyone who hadn’t seen him flex a few days earlier. His arms are clearly still a bit bigger then Andrews. Their cocks, on the other hand, look exactly the same size. While Andrew’s dick is more obscured by his new full bush, it’s clear that the two were hanging equally low.

“Damn, Andrew. You look good.” Matt purred as he looked his twin up and down. “I’m almost glad that was a defective rubber.

Andrew smirks at his bro, crossing his larger muscular arms in front of his newly firm pecs. “Control yourself bro,” his voice has lowered more drastically with this new change. “Another mishap and I’ll probably be the same size as you.”

He stretches his arms over his head, feeling his new size. “Well, we wasted our day with experimenting. All this growth sure is making me tired.” Andrew lets out a deep yawn as he goes to sit on his bed. Matt’s eyes never leaving his body.

Matt walks over and joins Andrew on his bed, reaching out, massaging Andrew’s newly thick shoulders and traps. “Having a twin who’s the same size as me wouldn’t be the worst thing,” he tried joking as he rubbed Andrew’s thick neck. “Who knows, Bro? Maybe you’ll become a gym rat like me!” Matt laughs, as he throws his head against the pillow on Andrew’s bed.

Matt pulls Andrew back into him, until they are both prone and laying in each other’s arms. “Remember how we used to do this, as kids? Sneak into each other’s beds, just stay awake for hours at night, talking to each other? Well, whispering back then. We didn’t want our parents to hear us awake.” He chuckled. “Those were good times, weren’t they?”

Andrew lays against Matt’s arm; its smaller then he’s used to with his new size and the lack of size Matt once had as he reminisces about those great times they shared. He grins, turning to face Matt. “Yeah…” Andrew leans in and tries to get a whiff of Matt’s underarm, but when his nose nuzzles Matt’s inner arm, there is no longer that manly masculine scent that he loved so much. He sighs, “Don’t you miss being big, Matt?”

“A little. Okay, more than a little. I do miss it. It’s weird, you know? One day I’m the big man on campus and the next, well, not so much.” Matt pauses for a few seconds, gathering his thoughts. “But it’s not all bad, you know? I’m, uh, learning to look at things differently. A Different perspective or whatever. Maybe I wouldn’t have chosen this, if you’d asked me a couple days ago. But hey, lemonade out of lemons right?”

Matt turns his own body to look Andrew right in the eyes. “And you’re finally getting some meat on you! For me, that’s definitely a big plus!” Matt grins back at Andrew, running a hand over his brother’s hairy chest, feeling the contours of the new slab of Andrew’s pecs. “Could be worse, right?”

Andrew pushes himself up on his elbows. “You’re right. It could have been worse. What if we were complete strangers, or even some stupid roommates?” Andrew bursts out laughing. “At least it’s happening between us, two close brothers.” Andrew moves in to kiss Matt, this time much deeper as the wall between them begins to break, most likely due to the recent surge of Andrew’s confidence from the recent growth.

“If I get bigger then you, Matt, I will be there for you like you have always been for me all these years.”

“Mmm..” Matt murmurs, surprised and pleased by the force of Andrew’s affections. “I know you’ll be there, Andrew. I know you’ll look out for me. I want you… too…” Matt’s voice catches as the words “Want You” escape past his lips. Like something deeper inside him is triggered. Matt can’t quite figure it out, but it makes him feel safe pressed against Andrew; their hard bodies mashed together on Andrew’s bed. His dick slowly starts to stir again, but Matt wills himself to behave. After all that’s gone on so far, he’s not entirely sure he can take much more, even though a deep part of him desperately wants it.

Andrew yawns again, exasperated from the events of the day. “Well… I’m just gonna… sleep…” Andrew crashes out on the spot, his head hitting the pillow as he begins a deep snore. His body needing to recharge from today’s dramatic growth ordeal.

As Matt pushes himself off the bed to move over towards his own, Andrew begins to mumble words in his sleep…

To Be Continued...

Coming Soon Part 07: While You Were Sleeping

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hardmuscl4life

Thanks for that. I really like this story a lot.  

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22 minutes ago, hardmuscl4life said:

Thanks for that. I really like this story a lot.  

Anytime, I'm here to please!

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Kymuscleboy

That was so good, and a very promising teaser for the next chapter!

Despite what's happening, both of the brothers seem to be very loving and selfless toward the other.

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5 hours ago, Kymuscleboy said:

That was so good, and a very promising teaser for the next chapter!

Despite what's happening, both of the brothers seem to be very loving and selfless toward the other.

I tried to pull away from the typical revenge type of role reversal associated with Muscle Theft. Yes this is muscle theft,  but it's shown from a different perspective.

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mm1981

Simply an amazing story! Well worth the wait!

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Beast7x6

Wow this is good, I can't wait to see the rest! 

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BoneMonkeh

Can't wait for part 7!

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lsosuke

Me encanta el crecimiento, el romance, es increíble y caliente, quiero que el brothers 2 crecer juntos

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mm1981

New part soon, I hope! :D

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