Step Brother Lusts His Step Sister

Jason catches his step-sister masturbating and decides to take over for her

My father married my step-mother, Caroline, when I was twelve. I inherited a younger brother, Justin, who was eight at the time, and a younger sister, Stormy, who was ten at the time. Before that, I was the only child, so needless to say, at twelve, I wasn’t too happy to gain two siblings. Unfortunately I didn’t have much of a say in the matter, so I tried to make the best of it. My new younger brother was annoying to say the least, always wanting to get into my shit and be up my ass 24/7. I guess that’s what happens when a younger brother looks up to an older brother. My new sister, on the other hand, was totally opposite. I have a feeling she felt the same way I did about having a new sibling. But at least she only gained one, and already had a younger brother so didn’t have to make an adjustment from being the only child. I liked her more than I thought I would, probably because she stayed out of my way and didn’t bother me.

Growing up together was interesting. I never viewed her as a sister, but I did view her as a sort of friend. Which is a good thing since the older we got, the more attracted to her I became. I watched her to from a cute pre-teen to a beautiful teenager. I watched her body bud through puberty. She started getting curves and her tits started to grow. It was wrong, but it felt so right being so attracted to her.

I’m seventeen now, making her fifteen, almost sixteen. I’m not sure if she knows how attractive she is to me, but if she does, she doesn’t really let me know. But Fuck, was I attracted to her. She’s petite, maybe about 5’4, short compared to my 6’2. She has a round, tight ass that I can always see perfectly through the tight jeans and skirts that she always wears. Her tits are about a size C. I see her cleavage a lot, she’s always wearing low cut shirts. She probably shouldn’t wear stuff like that around me, I’m supposed to be her brother, but she doesn’t really seem to care. I try to be discreet when I stare at her, as far as I know, she hasn’t caught me – yet.

Dad went out with Caroline and Justin to do some shopping. Neither Stormy nor I wanted to go, so we both stayed home. We usually kept to ourselves in our bedrooms, today was no different. I walked out of my room to go find a snack in the kitchen. I have to pass by Stormy’s room on my way there. I notice that her door is cracked. I peek through the crack to see what she’s up to and my dick instantly gets hard. I’m not sure why, knowing that I’m home, she has decided to play with her pussy with her door cracked, but there she was, lying on her bed, her hand inside her panties. I could see her fingers working her pussy. Her eyes were closed and she was biting her lip. I heard a soft moan escape her. My dick tingled. Did she want me to see this? Or did she really just not think about it? I continued to watch her finger herself. She was moving her hand in circular motions, I’m guessing fingering her clit. She grabbed one of her tits with her other hand, squeezing it and pinching her nipple. My hand finds it’s way to my throbbing cock. I rub it a couple times and decide that I’m not going to play with myself.

I push open the door and Stormy jumps, pulling her hand out of her panties quickly.
“Jason! I’m so sorry, I didn’t realize you were out of your room!”
Her eyes found the bulge in my jeans.
“How long have you been standing there?”
“Long enough,” I replied. “Please, don’t stop on my account. Continue.”
She stared at me for a moment. Then she slowly slipped her hand back into her panties. I sat down in a chair she had near her bed. She started doing her circular motions again on her clit. She moaned quietly, watching me as she fingered herself. By now, my dick was begging to be released from its cage. I unzipped my jeans and pulled them, and my underwear off my dick. It sprung out of my pants like a jack in the box. Stormy’s eyes widened. I grabbed it and slowly started stroking it. My dick is so thick that my hand just barely fits around it, even though my hands are large. I move my hand all the way up my 8 inches, and all the way down to my throbbing balls. Stormy moves her hand faster on her clit as she watches me stroke my huge dick.

I get tired of fucking myself. I want to fuck her. I stood up from the chair and walked over to the bed. I leaned down and kissed her pouty lips. She moaned on my mouth, which turned me on even more. I took off my pants and understand and I climbed onto her bed and straddled her. I grabbed her arm and pulled it away from her pussy. I sniffed her hand, my cock pulsed. She smelled so fucking good. I sucked her fingers into my mouth, tasting her pussy juices. I groaned, her taste was so sweet. I grabbed her other arm with my other hand and I held her arms down above her head. I kissed her neck as I began to rub my dick on her panties. She moaned in my ear.
“Oh Jason, I’ve been longing for this day,” she whispered. I humped her faster. I looked her into her beautiful green eyes.
“Me, too,” I admitted to her. “I’ve been longing for your body for years now.”
I kissed her lips, parting them with my tongue. Her tongue met mine and I got chills over my whole body. We both moaned as we french kissed as I continued to rub my throbbing dick on her panty covered pussy.

We made out for a couple of minutes before I pulled out of it. She looked at me longingly. I moved my mouth to her neck, licking and sucking on it gently. She groaned softly. I could feel her pussy wetting her panties as I moved my mouth from her neck to her chest. I let go of her arms and ran my hands down her sides and back up, lifting her shirt up. I pushed it up to underneath her chin and I finally got to see her fantastic tits bare. I leaned down and kissed one, and then the other. She gasped as my mouth touched her. I flicked her right nipple with my tongue. She pushed her chest upward, moaning softly. I started sucking her nipple gently, biting and pulling. Then I moved my mouth down to her stomach, kissing and licking her, moving to her lower stomach. I got to the top of her panties and I felt her hold her breath. I licked her panties where her pussy was. She grabbed my hair with her hands and pulled gently. I moaned between her legs. Then I moved her panties to the side to reveal her swollen pussy lips. She was clean shaven and glistening from how wet she was. I licked her slit. She tasted so fucking good, I almost came just then. She moaned and squeezed my hair tighter. I pushed my tongue between her pussy lips and ran it up and down her pussy. She pushed her hips toward my face. I lapped her up like a dog drinking water, faster and faster. She humped my face. I sucked her labia into my mouth and pulled it. Then I tongued her clit, flicking it as fast as I could move my tongue. She moaned continuously.

I stopped licking that sweet pussy and spread her pussy lips. She was still a virgin. I ran my finger over her hymen. She groaned and tensed up. I looked up at her face. She looked nervous.
“Just relax. It’ll only hurt a second.”
I gently pushed my finger against her hymen. She gasped and then held her breath. Like a bandaid, I pushed my finger into her pussy, breaking her hymen. She screamed in pain.
“Ow, that hurts, stop!”
I did not stop. I moved my finger in and out of her slowly, watching her. Her face was screwed up in pain as my thick finger moved in and out of her tight little pussy.
“Please stop, it hurts,” she begged me, but I ignored her pleas. I stuck a second finger into her. She had tears in her eyes, that turned me on even more. I started fingering her a little faster. There was a little bit if blood on my fingers from her broken hymen. I leaned down and licked it off as I continued to finger her. Then I started sucking her clit. She stared to moan in pleasure. I took that as permission to finger her faster and harder, continuing to suck her clit. I could feel her pussy walls tighten, her legs started to shake. She was about to cum. I fingered her faster and faster until she screamed as she came. Then her body relaxed and she went limp. I pulled my fingers out of her and looked up at her.
“Wow,” she breathed. “That was the most intense orgasm I’ve ever had.”
I grinned at her. I crawled back in top of her and kissed her deeply. I began rubbing my hard as fuck cock on her pussy.

“I don’t know if I can take that,” she whispered.
“I’ll go slow,” I said as I continued to rub against her. “I promise I won’t hurt you.”
She nodded. I sat up and spread her legs. I rubbed myself up and down her slit. I grabbed my dick and slapped it against her pussy. She moaned softly.
“You ready?” I asked her. She nodded as she watched me. I pushed the head of my cock into her pussy. It was twice the size of her hole. I watched it stretch. Her body tensed.
“Relax so it doesn’t hurt,” I said to her as I push a little more. She groaned in pain. I rubbed her clit with my thumb trying to relax her. I moved just the head of my cock in and out of her as I fingered her clit. She started getting wet and I could feel her body start to relax. I took the opportunity to push a little more of my dick inside of her. I lifted her legs into my shoulders to open her up more. Without warning or hesitation, I shove my full 8 inch dick into her tight little pussy hole. She screamed in pain. I moved in and out of her slowly, stretching her pussy. Her screams turned into moans as it started to feel good to her. I watched as my fat cock stretched that tight pussy. I was ravenous. I started to fuck her harder. I couldn’t get enough of that sweet pussy. I squeezed her legs as I rammed my cock into her, harder and harder. I was losing myself, she felt so fucking good. I lost touch with reality, all I could think about was fucking that pussy. I could hear her screaming and moaning, but it sounded so far away. I fucked her harder and faster until the whole bed was moving. I grabbed her throat and choked her as I fucked her into oblivion. My balls started to tighten and I could feel myself about to cum. I slowed down, but was still moving so fast that her tits were slapping her in the face. I groaned as I started to cum. My dick pulsed with every shot until I emptied my nuts into her.

When I finished, I pulled my dick out of her, her pussy gaping, my cum and blood pouring out of her. I don’t think I’ve ever cum so much or so hard in all of my years of masturbating and fucking girls. I came back to reality. I looked up at her and realized she had been crying. I didn’t even feel bad. I kissed her mouth.
“Thanks for that amazing Fuck,” I said. I put my underwear and clothes back on and left her room, went into the kitchen, and got the snack I had originally left my room for.

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