Bound by my Stepbrother – BDSM Taboo Erotica

By: Kenzie Haven

Part 1 of Bound by Secrecy


Erotica Story Genres:


I’d been dreading our family reunion. Every five years, the entire Marshall clan got together and celebrated for a week. The location was different every time, but the unspoken tension and hostility was always the same.

My mother and stepfather had the best of intentions. They tried to mix their blended families together until we were one happy Brady Bunch.

They tried, but never succeeded.

I was only fourteen when they married. Instantly, I needed to live with a new brother and sister. They were both a few years older than me and took some getting used to.

The only reason I continued to show up to the reunions was Chris. He was the stepbrother of my daydreams: six feet tall with caramel-colored hair and eyes that sparkled as deep as the Mediterranean.


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He was also rich. Like, Billionaire-on-the-cover-of-TimeMagazine rich. I always chalked his wealth up to a lucky gamble on a new technology company. He insisted it was skill and that nobody could have seen the rising success of the company like he did.

Whatever it was, it resulted in him owning property around the world, driving an obscenely expensive car, and having whatever woman he wanted draped over his arm.

Chris and I flirted like crazy, and we always had. Ever since he caught me touching myself in the shower as a painfully-shy sixteen-year-old, he went out of his way to set me on fire.

I always assumed his attention was just ordinary sibling teasing, but I couldn’t quite convince myself of that. There were always sexual undertones, a naughtiness that could not be denied. And he never acted that way with his actual sister.

I’d spent so many hours dreaming about Chris and everything he could do with me that I found myself blushing when I was around him. If he could see all the dirty thoughts that ran through my head, he would have a lifetime of teasing ammunition.

There was no way I’d ever let him know my feelings, or that it only took one look from him to set my pussy into a convulsion. It would be mortifying if he knew the truth. I mean, he was my stepbrother—we weren’t supposed to have sizzling thoughts like that about each other.

But… he wasn’t technically related to me. It was only by marriage. There wasn’t actually anything wrong with it, nor was it illegal. It was just… weird.

I was going to need a plan to avoid Chris for the entire week. I couldn’t even be in the same room as him before I started pulsing down below. Avoidance was going to be my best shot at surviving the whole ordeal.

The reunion was being held in Cancun, Mexico this time. At least there would be plenty to see and do apart from my stepbrother. I could get drunk on tequila, make out with a random señor, and be back on the plane before I knew it.

“Ronnie!” Mom shrieked as she ran at me with open arms. I met her halfway, caught up in her whirlwind as she enveloped me in a hug.

“It’s good to see you, Mom.”

She kissed both my cheeks. “You look so tired. Are you getting enough sleep?”

That was my mother for you. “I’ve just had a five-hour flight and I had to get up at the crack of dawn. Cut me some slack. Has everyone else arrived yet?”

“You’re the last. Go get changed. We’re all meeting by the pool. I’ll order you something yummy and it will be there by the time you’re ready.”

I wasn’t going to argue with that. Not only was I starving, but I needed some serious alcohol. Dealing with family always made me want to buy a keg and drink the whole thing myself.

Checking into the hotel, I wheeled my single piece of luggage through the corridors and found my room. The hotel was more of a resort, single-story with lots of bungalows dotted around the grounds. My bungalow overlooked the ocean.

There was already luggage in the room. I checked the number on the key packet and the door again. They matched. Apparently, I wasn’t staying alone.

It was probably my mother’s idea. Stick me with my stepsister for the week, make us bond and become best friends by the end of the vacation. It hadn’t happened in ten years, and it was highly unlikely to work now.

Chris spoiled his biological sister, Hannah. He absolutely doted on her, showering her with whatever expensive bauble she wanted.

I had always been jealous about how close they were, completely and utterly envious of the attention she received from him. I didn’t care about the money or the presents, but I would have liked to have been part of the affectionate hug or inside joke occasionally.

There was nothing I could do about the sleeping arrangements now. Chances were Hannah had probably already complained about it and tried to switch rooms. If she didn’t get her way, then I had no chance.

Quickly slipping into my bikini and throwing a dress over the top, I grabbed my towel and headed for the pool. If I only attended the family events that involved food and beverages, perhaps I could survive the week.

It wasn’t hard to spot the Marshall clan around the pool. The dozens family members were sprawled across half the area, talking happily.

I found a spare lounge and spread my towel, greeting all the relatives I passed along the way. True to her word, Mom delivered a plate of nachos and jug of sangria as soon as I sat down.

Settling into the lounge chair overlooking the glistening pool, my belly warmed with the sangria, things were definitely a good start.

Until someone splashed me, drenching me and my towel with water. I bolted upright, scanning the area for the culprit.

I found him easily. Chris was resting his arms on the side of the pool, a cheeky grin spread across his gorgeous face.

“Wet now?” he asked.

“Soaked, thanks to you,” I replied, trying to put anger into my voice and failing. Chris made me wet in more ways than one.

“Come on in, the water’s great,” he urged.

I should have listened to the little voice of reason in my head, but it was overridden by my libido. I stripped off my dress and jumped into the pool, splashing Chris in the process.

“Race you,” he said, taking off for the deep end before I could move. I chased after him, knowing I had no chance of beating his rapid strokes.

I hit the wall well after him. “That wasn’t a fair race,” I said. His hand rested on my back for a moment while I steadied myself. He gave it a rub before pulling away again.

“You’re not exactly playing fair either, Ronnie.” He winked, but I must have looked sufficiently confused as he leaned in and whispered, “That bikini is enough to bring a man to his knees.”

My eyes instantly traveled lower, scanning over his chiseled abs to reach his swimsuit—tight black trunks. Lord, I wasn’t going to survive the week after all.

The next words left my mouth before I could stop them. “So you’d prefer if I took the bikini off, then?”

I earned the reaction I was after as Chris did a double-take. If he was picturing me as naked, then the generous bulge in his pants was only going to grow bigger.

And I was sure it would get quite big.

I needed another drink.

Chris moved to pin me against the side of the pool. My feet couldn’t touch the bottom and I couldn’t kick to stay afloat. If he wasn’t pressing against me, I would sink to the floor.

“Actually, I’d prefer if I removed the bikini for you,” he said into my ear. The weather was balmy, and the water warm in the pool. But those few words somehow managed to send a shiver down my spine.

He kissed my neck before laughing and swimming away. I had to grab the side of the pool to stop myself from drowning.

Chris swam back to the other end and pulled himself out. Beads of water dripped down his tanned skin, accentuating each of his muscles. It was probably my imagination, but I was sure his swim trunks looked tighter than they were before.

Shaking my head, I made for the steps and returned to my lounge chair. Slipping on my sunglasses, I refused to acknowledge Chris for the rest of the afternoon. I was not going to spend the whole week salivating over him.

Hannah was waiting in the room when I returned. She wasn’t happy about having to share, but we pretended to be polite and went to bed.

The next day we were supposed to take a family trip to the national park where we would go on a hike to see the waterfalls.

I could deal with the hike, even the drive there, but I could not deal with the matching ugly orange T-shirts we had to wear with the words, “Marshalls Rule” printed across the front of them. Nobody would be able to miss us in the forest.

We piled out of the car and I let the others go on ahead, hanging back so I could at least enjoy the solitude of the trees and chirps of the native birds. It was completely different than the rush of the city, and I loved it.

“Nice shirt,” Chris said, making me jump as he came up behind me. I thought I was the last one in the line. Where had he been hiding?

I looked over at his matching tee. Somehow, he made it look good. “Same to you. I think I’m going to kill whoever thought of them.”

Chris laughed, and it was even better than listening to the birds. “Thank your mom for that. She said they would be fun and festive.” I rolled my eyes.


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We came to a fork in the path. Chris pulled on my arm and tugged me down the trail opposite from the one everyone else was walking. “Let’s go down this one.”

“We’re going to get lost,” I protested.

“Nah, I have a map.” That was the Chris I knew—he didn’t believe in doubts. He was always right, no matter what happened.

He let go of my arm when he was satisfied I wasn’t going to run away. I could still feel his fingers on my skin for ages afterwards.

“So, what are you up to these days, sis?” he asked as we walked.

“Working, mainly. The new antique shop is about to open, so I’m preparing for the grand event.”

“That’ll be five stores now, right?”

I was surprised he’d been keeping count. “Yeah. Although it’s nothing compared to your empire.”

He waved my comment away. “It’s not all it’s cracked up to be. This,” he gestured to the trees, “is what really counts. This is real. Little else in my world is.”

It was the first time I’d seen Chris anything but overly-confident. My heart pounded a little more for him. Not to mention my pussy.

We walked and talked for at least another hour before coming to a waterfall. My mom had said the trail would lead us to the top of the falls, but this trail had led us to the bottom.

Chris took his shirt off. “I’m going for a swim. You coming?”

“I don’t have my swimsuit,” I replied. It was hot and humid, even under all the trees, but I wasn’t going to dive in fully clothed. I wasn’t crazy.

He took off his shorts and I tried to avert my eyes. Unfortunately, it was harder said than done. Chris had a rocking body, no matter how many times I said he was my family and I shouldn’t notice.

I did notice. Too much. It was getting hotter by the minute.

“You don’t need your suit,” he said, reaching for his boxers. “I’ve seen you naked before, Ronnie. Remember?”

Images of the time he’d caught me masturbating in the shower flashed into my mind. How mortifying. My body had changed in the last eight years—I was only developing then. Now I had curves in all the right places.

“Thanks for reminding me,” I replied drily. He slipped off his boxers, standing in front of me completely naked. His cock dragged my gaze to it without me realizing. He was more than generously hung. His cock was massive, perfect, and it would feel fantastic inside me.

I squeezed my thighs together, wishing I could get a handle on my wanton need.

“Come on, Ronnie, don’t be shy.” He waggled his hips at me. “Strip off and join me. There’s no one else around.”

He dove into the water, sending it splashing everywhere. It was crystal clear and oh-so-inviting. I’d never gone skinny dipping before. Perhaps a forest in Mexico was a good place to start.

I peeled off my clothes until I was down to my underwear. Chris watched my every move, water dripping from his caramel hair. Did he have to stare so intently?

“Take it off,” he urged.

What the hell? I turned to face away from him and stripped down until I was completely naked. He was my stepbrother, after all. You weren’t supposed to feel embarrassed around siblings, right?

I slipped into the water without looking at Chris, even though I could feel him still watching me. The cool water was perfect for my heated skin. Perhaps I could calm the hormones coursing through me.

He swam over and splashed me. “Nice, huh?”

“It’s beautiful in here,” I agreed.

“You’re beautiful. I think you’re more beautiful every time I see you.”

I held my breath while our eyes locked together. I was surprised to see my desire reflected in him. His eyes burned with the same unspoken longing that I felt.

Before I knew it, our lips crashed against one another’s. Chris kissed me deeply as I parted my lips for him. His tongue delved into my mouth, owning me like I could never imagine.

Instead of feeling wrong, it felt so, so right. I’d dreamed about kissing Chris thousands of times. It was him I was thinking about when I touched myself in the shower at sixteen. In that fantasy, he didn’t just catch me in the shower—he joined me, too.

With no clothes on, it was difficult to conceal just how turned on I was by that single kiss. My nipples peaked into hard nubs and my cunt was already slick with want. I was ready to take him, and it was all because of a single kiss.

What would happen if he touched me?

Kissed me everywhere?

Chris released me and pulled his head back. His arms remained around me, holding my body against his in the water. “I shouldn’t do this, Ronnie.”

“It felt pretty good to me.”

“I have a lifestyle that isn’t… good for you.”

“It’s just kissing, Chris,” I said, willing to say anything for him to do it again. And again. “We’re not blood-related. It’s okay. Nobody has to know. We can keep it a secret.”

He shook his head. “No, you don’t understand.”

“Explain it to me.”

It took a moment of hesitation for him to respond. “I like being with women in a certain way. A way that you probably wouldn’t like.”

“Try me.”

Conflict was written all over his face. I leaned in and pressed my lips on his, kissing him again to let him know that it was okay, that I would listen and not judge him for whatever he was about to say.

“Tell me, Chris.”

He licked his lips as his hand started to rub my back, nearly making me forget to listen. “I like having all control with women. In the bedroom, I mean.”

“Control? Like how?”

“I like tying women up, bondage and stuff. And right now, all I can think about is fucking you and I don’t want to freak you out.”

A thrill ran through me. I’d never done anything kinky before. But if Chris wanted to fuck me, then I would let him do whatever freaky thing he wanted to. Me and my pussy were up for anything. I trusted him implicitly.

“You’re not freaking me out,” I said. “Fuck me, Chris. My body is yours. It always has been.”

“I’m going to take what I want.”

“So take it.”

“It’s going to be rough.”

“So start already.” He wasn’t going to scare me away. I’d waited too long for this moment. My legs were already wrapped around him and I was already naked. His cock was hard between us. Just a little shifting and we’d both get what we wanted.

I pressed my hips against him as my clit brushed his hard length. I rubbed myself along his shaft and gave a whimper of delight. His cock grew harder from the friction.

Without warning, Chris grabbed me tighter. He pulled me against his body until I couldn’t move. He started walking in the water until we reached the waterfall. The water misted as it hit the pool at the bottom, making it feel like we were in a cloud. It was even better than my fantasies. My stomach was full of butterflies as I anticipated what was about to happen.

He guided us to the edge where he reached over me to grab at a vine. He had to tug on it several times before it came loose.

“Hold your hands behind your back,” he ordered me. All humor and softness was gone from his eyes, replaced with a burning intensity that told me he wasn’t going to be defied.


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My hands reluctantly left their position draped around his neck to retreat behind my back. The action pushed my breasts out further as they floated on the top of the water. He’d “accidently” touched my boobs on many occasions while growing up. Now he had full access to them.

Chris wrapped the vine around my wrists, binding them so I couldn’t move. He tested them, making sure the bindings weren’t too tight or loose.

Satisfied, his hands snaked around my body, coming to rest on each breast. He squeezed my tits, bringing one up to his mouth to suck on the nipple.

I hadn’t been expecting him to bite down, but the sharp sting soon morphed into a pooling of warmth in my belly. Chris did like it rough, and as it turned out, so did I. He toyed with both my nipples, taking turns squeezing and suckling on them.

My fingers itched to run through his hair or tickle his neck, but they were bound and wouldn’t budge. We were playing by Chris’ rules and I had no choice except to obey. The thought made my pussy ache to be touched.

I moaned as he kissed a trail from my tits up my neck and finally reached my mouth. His tongue dove in between my lips like he was dying to taste me. I breathed in, reveling in the distinctive scent of his aftershave.

Voices sounded in the distance just over the pounding of the waterfall. We both froze, straining to place the voices and hear what they were saying.

All I could think about was the fact our families were out in the forest somewhere, and if they caught us like this, they would be horrified. Siblings weren’t supposed to engage in a passionate embrace, even if they were only step-related.

Chris placed a finger on his lips in a shushing motion and pulled me further under the spray of the waterfall. We passed directly underneath the pouring water as it fell and completely drenched us.

We came out the other side in a small cave the roaring water had carved out of the stone. With the falling water creating a screen for us, the voices and whomever they belonged to disappeared.

“We need to be quiet,” Chris whispered. “You’re going to want to yell out when you come, but you’ve got to remain quiet. Understand?”

I nodded, not sure my voice wouldn’t be too high-pitched if I actually spoke. It felt incredibly naughty doing this with Chris, and I wanted it to continue. My cunt needed to be filled, and it would only accept him.

Chris spun me around so I was facing the wall and bent me over a smooth rock polished by a few centuries of the water flow. He pulled me up by the vines around my wrist.

With his free hand, he rubbed my back. I spread my legs in the water, desperate to get things underway. My pussy burned despite the coolness of the waves lapping against me. Even if I wasn’t half-submerged, I knew I would be dripping wet. There was no way I’d need lube if Chris was the one I was playing with.

His hand slid down to slap my bottom. I jumped from the surprise, but quickly leaned into the caress he gave the tender skin afterwards. I could take a good spanking any day.

His fingers splayed out and delved lower, finally reaching my swollen folds. He slid between my lips, easily gliding across my clit. I sank onto him, blindly searching for the hard cock I knew was back there somewhere.

I earned another slap on the ass for my greed. “I’ll take care of you, Ronnie. Don’t worry, just relax. You’ll be writhing in no time. I need to make sure you’re ready for me.”

One of his fingers slid into my hole, following by another. He plunged in and out, showing no mercy. With his thumb still stroking my clit, the sensation was too much.

The orgasm started as a ripple, then grew more and more intense and covered my whole body. I chewed on my lip, remembering the warning about being quiet. I was sprawled naked over a rock with vines binding my wrists together and my stepbrother touching my most intimate area. I did not want to be caught like this.

My cunt contracted around Chris’ fingers as he chuckled at my contained reaction. It was only a small orgasm, but it was enough to get me panting and desperate to be really filled. His two fingers weren’t nearly as big as I needed.

He teased me with his fingers the entire time I was caught in the orgasm’s grip. My breasts pressed against the cold rock, at least extinguishing the fire in my hard nipples somewhat. I wanted his hands to be everywhere all at the same time, but his cock needed to be in one place in particular.

Chris slid his hands back up to my ass as my climax subsided. It was only a lead up to the main event, and I knew it would be spectacular when my billionaire stepbrother decided I was ready for it.

He took one of my legs in each hand, my ass floating up almost to the top of the water. I was positioned where he wanted me allowed to wrap my legs around his torso.

I was wide open and ready to take him. Chris must have agreed with my estimation since he placed his cock at my hole, pressing in a little to test me. He needn’t have bothered; I was ready to take all of him in right up to his balls.

“Ready for this, Ronnie?” he asked.

“Yes, please,” I panted in response. He was still holding my inner thighs, his fingers dangerously close to my clit again.

He pressed his cock into me, opening and stretching me to my limits so I could take him. As horny and greedy as I was, it still took some work for him to thrust deep into me. I was finally filled and being fucked by my stepbrother, the one fantasy I’d held for eight long years.

The water swished around us as he thrust his cock in and out of me. He pounded me with reckless abandon, using my body for his own pleasure and taking whatever he desired.

One of his hands left my inner thigh and slid over to my clit. His fingers found their place between my lips, giving me a delicious squeeze. I squirmed under his touch, trying to keep everything together and not come too soon. I was enjoying the build-up too much to have it all over so quickly.

Chris started a rhythm with his fingers, rubbing my clit between his index and middle digits. He tugged at the sensitive piece of skin, igniting all the nerve endings and setting me ablaze.

I was going to explode.

Despite his warnings about staying silent, Chris grunted and moaned with every thrust. His thick cock slammed into me repeatedly, slapping against me like there was no tomorrow.

Like perhaps he had been waiting and wanting this moment for eight years too.

Just as I had.

His balls padded onto my pussy with every one of his movements. I wondered how they would feel in my mouth as I licked and sucked on them. Maybe I’d get a chance to find out one day.

The pressure inside me was building to unsustainable levels. My clit was being expertly worked with a strong hand and my cunt pounded into oblivion. The thought of Chris doing all this to me made everything that much sexier. I wished I was facing him so I could see each expression as it crossed his face.

With one last tug on my clit, I was gone. There was nothing small about this climax. It reached a crescendo as the pleasure tore through my body from head to toe. I had to remember Chris’ warning to stop myself calling out his name.

I wanted to yell it from the treetops.

He found his own release, his cock growing extra-large just before it writhed with cum. His seed sprayed me from within, mixing with my own juices in a beautiful union.

“Ronnie,” he moaned. He pulled me against him as his cock rippled and twitched. The sound of the water rushing down the fall curtained our noises.

Every part of my body tingled with pleasure. My toes curled and my hands linked together in the vine bindings. I hugged the rock underneath me while I sprawled across it, dreaming of it being Chris’ chest under me one day. This couldn’t be the one and only time we did this. I would make sure of it.

My stepbrother leaned over me, finally leaving my clit alone to pull me up from the rock and against him. We were still connected, his cock buried deep inside me right where it belonged.

He held me against him while I unwrapped my legs, my bound hands between us. His hands cupped my boobs, his fingers fondling my nipples and tweaking them just enough to keep the aftershocks rolling through my belly.

“I’ve wanted to do that for a very long time,” he said, his breath caressing the skin on my neck and sending out a new wave of tingles down my spine. “There are so many things I want to do to you, Ronnie.”

“So do them,” I replied, laying out the challenge. If his other kinks were even half as good as what we just did, I would be more than willing to try them.

He pushed me forward enough to catch the vine and untie me, rubbing my wrists to make sure I wasn’t hurt. He was giving me my control back, but I found I didn’t want it. I would gladly hand over everything I had to Chris and his masterful body.

His cock had softened inside me, and he pulled it out and spun me around. I collapsed into his chest and arms as he enveloped me. My head rested on his shoulder while my legs encased him. I missed our connection and knew my pussy would be ready to welcome him in again in no time.

“I told you I like it rough,” Chris said. “You should be running. If you dated a guy like me, I would beat him up.”

It gave me a happy little tingle hearing how protective he was of me. It was like that growing up, too. As soon as any guy in high school looked my way, he would warn them off. I loved it then, and I still loved it now.

I kissed his neck, sighing happily. “I like it however you want to give it to me.”

“I have a sex room in my mansion.” That was a surprise. I’d been to his mansion hundreds of times and never seen a trace of a secret playroom. Maybe I didn’t look hard enough.

“I’d like to see it,” I replied.

“Are you sure you want to do this?”

“Absolutely.”

“We’ll have to keep it a secret.”

“My lips are sealed,” I promised.

Chris smirked. “Okay, sis. Let’s play.”

Maybe the rest of the reunion would be a lot more fun and exciting than I imagined it would be. I would even put up with the cheesy matching shirts if it meant I could take Chris’ off at every opportunity.

Marshalls really did rule.