Masturbation Isn’t Incest

For the majority of my life I have been profoundly infatuated with my twin sister. Growing up we were quite poor and often destitute. We always shared a room but until we were in high school we shared a bed. Sure, maybe we could have scraped some money together for another mattress or something. Our room was small enough so another bed would have been a tight squeeze. We enjoyed sharing a bed and when we were young we shared clothes. Katarina outgrew me for a short period but once my growth spurt hit I was towering over her. She never got to wear feminine clothes until she outgrew me. Growing up we only had each other for friendship. Our parents moved a lot and I never found my friend group until high school.

I never realized that it was strange for siblings of the opposite gender to share a bed. I never realized it was considered odd to be best friends with your sister. Katarina went everywhere with me and she was an accepted addition to the group. My sister likes painting and drawing while I can't even draw a proper stick figure. My sister dabbles in music production and video editing. She spent a lot of free time in high school making fan edits of TV shows with music in the background. She would never dare tell anyone this but she always showed me. I subscribed to her and watched them all.

Currently we are both twenty-five years old. Katarina is a slender and gorgeous brunette. When we were young she wore a ponytail but these days it's silky and wavy. Her hair falls down her back and over her shoulders. Her shoulders and chest are small but her thighs and backside are voluptuous. We live in Ohio but she works as an assistant editor for an art magazine based in New York. Our parents always said her art degree would be pointless but she's making good money. She's making a New York salary in Ohio so she is more than okay. She was promoted from researcher a few months ago under the assumption that she'd have to move. But more and more companies these days are valuing the low-cost benefits of remote labor. They sold off an entire office building and can open their hiring prospects to all over the globe.

I never was remarkable or gifted like Katarina. I never had a passion outside of playing video games in my spare time. I skipped college and worked retail for a while. Thanks to my buddy I work in construction at his father's company. It's hard work but it pays well. I'm six foot one and tower over Katarina's five foot six body. I have the same light brown hair and dark brown eyes as my sister. My weight varied growing up depending on my physical activity. If I was playing a sport I was in shape and if I wasn't I had a bit of belly. I've been doing construction for the last two and a half years so I'm in the best shape of my life. I spend nine hours a day doing manual labor in the sun.

We both make good money and have good credit scores. My sister has student loans that she'll be paying off for many years but other than that no debt to speak of. We rent a house together in the suburbs that has a nice lawn and a pool in the back. A lot of my friends are either living with their parents or just making enough to rent a shitty apartment. I have a nice life with Katarina in the suburbs. Our neighbors are mostly old people or young married couples just starting life. We get mistaken as a couple all the time. A good portion of the neighborhood assumes we are married or at least dating. I cut the grass and shovel the snow and Katarina tends to the plants. When the weather is nice we take out the grill and cook out back. Our combined income has given us a cozy life.

I'm not sure about Katarina but I've never had a serious girlfriend. I've dated, hooked up, and had friends-with-benefits but I've never gone steady. I've never seen Katarina out with a guy or using a dating app. When she lost her virginity years ago she told me all about it. We have a close relationship and sex is not a taboo topic. We are aware that we both masturbate. When we lived with our parents and shared a room I caught her using a vibrator a few times after college classes. She didn't yell at me to go away or even close her legs and pull up the sheets. She kept the vibrator on, looked at me, and said give me five more minutes. I've seen my sister naked before so her body is no mystery to me. We have our own rooms now but we are still comfortable with nudity. She'll shower and walk back to her room completely naked. We'll have casual conversations where she is topless or completely naked.

I've never felt the need to date because all my needs are met besides sex. I have a woman at home that I can talk to. I have a woman to go on vacation and watch movies with. I have a woman that I enjoy spending all my time with. She's my sister but she fills all those roles. If I want sex I just get sex but I feel satisfied in every other aspect with Katarina.

The decision to share beds again was my sister's idea. She claimed that she needed a new mattress and couldn't get any sleep on hers. We've been sharing a bed for weeks and I don't know if she even put in an order. Truth be told I don't care. I've missed having my sister in bed with me. We only stopped sharing beds because we were teenagers and felt like it was uncool to sleep with a sibling. I think if the societal pressure didn't exist we would have kept sharing a bed. The way things have been going lately has me wondering what kinds of things I would do if societal pressure didn't exist.

My sister is objectively a beautiful woman. She has a cute small nose and a gorgeous face. Her lips are full and her smile is sincere at least with me. Her hands are soft and dainty while mine are rough and weathered. She almost always wears loose pants but her ass and thighs are amazing. She never feels the need to show them off but I see them around the house. She often walks around in panties or boy shorts. Sometimes she'll wear a pair of my boxers if she hasn't done laundry. We've had a lot of tension between us and I don't know if we're ready to acknowledge it. We've made subtle moves in a sexual direction but it feels natural.

In the weeks we've been sharing a bed we have cuddled. We have always been physically affectionate toward each other but the cuddling is new. We kiss each other on the cheek and give hugs so I'm used to feeling her against me. Cuddling in bed is foreign to me. We would share a bed for necessity growing up but now it was for comfort. She'll lie against my chest and wrap her arms and legs around me. I'll stroke her back and run my fingers through her hair. I've touched her ass a few times and she didn't even flinch. I knew not to cup it and squeeze but when my hand went there she never seemed bothered.

One evening after a long day of framing walls under the hot Ohio sun I came home to find Katarina already in the kitchen wearing nothing but one of my old faded construction company t-shirts. The hem barely covered the bottom curve of her ass. Her bare thighs looked smooth and warm under the kitchen lights. She was bent over the open fridge digging for something and the shirt rode up high enough that I could see the soft pink folds of her pussy lips peeking out from between her thighs. No panties. Freshly shaved or maybe just trimmed short. My cock twitched hard inside my jeans before I even closed the front door.

"You're staring again," she said without turning around. Her voice was casual like she was commenting on the weather.

"You're not wearing underwear," I answered. My voice came out rougher than I meant.

She straightened up holding a bottle of wine and turned. The shirt clung to her small perky tits. Her nipples were already hard little points pressing against the thin fabric. "Laundry day. Yours are all dirty too so don't act shocked." She poured two glasses and walked over to the couch. Every step made the shirt sway just enough to flash more of her bare pussy. I followed like a dog on a leash.

We sat close. Her bare thigh pressed against my dusty jeans. She handed me a glass and took a long sip of hers. Shark Tank played on mute in the background. My hand settled on her thigh the way it always did now. Higher than usual. My fingers brushed the soft skin right where her leg met her hip. She didn't move away. Instead she shifted so that my fingertips grazed the outer edge of her bare cunt. Warm. Soft. A little damp already.

"Corey," she said quietly. "You're touching my pussy."

"I know."

"Do you want to stop?"

I didn't answer with words. I just dragged my middle finger slowly along her outer lip. She was slick. Not dripping yet but wet enough that my fingertip came away shiny. Katarina exhaled through her nose and spread her legs a little wider on the couch. The shirt rode up completely. Her pink slit was right there under the living room lights. Smooth. Perfect. The little hood of her clit peeked out when she shifted again.

I rubbed her slowly. Just the outside at first. Circling. Spreading her juices around. She watched my hand with dark eyes. Her breathing got heavier. One of her hands landed on my thigh and squeezed. Then it moved higher and cupped the thick bulge in my jeans.

"You're hard," she whispered.

"No shit."

She unzipped me without asking. My cock sprang out heavy and flushed. The head was already wet with precum. Katarina wrapped her soft fingers around the shaft and stroked once from base to tip. Slow. Deliberate. She smeared the precum around the head with her thumb. I groaned and pushed two fingers between her folds. Her cunt was hot and tight even around just my fingers. I found her clit and rubbed in small circles while she jerked me off with that perfect twin sister grip.

We didn't speak for a long time. Just the wet sounds of my fingers working her pussy and the soft slap of her hand on my cock. She got wetter. Her hips started rolling against my hand. I could feel her inner walls fluttering. She was close already. I was too. Weeks of shared beds and accidental touches had built this pressure up until it felt like my balls were going to explode.

"I'm going to come," she said, voice shaky.

"Do it. Come on my fingers."

She did. Her thighs clamped around my wrist. Her pussy clenched hard. Clear juice ran down my knuckles onto the couch cushion. She kept stroking me through her orgasm, faster now, twisting her wrist the way I like. I came with a grunt, thick ropes of cum shooting up onto my shirt and her bare thigh. She kept milking me until every drop was out. Then she lifted her hand and licked a stripe of my cum off her fingers while looking me dead in the eye.

"Still not incest," she said softly. "We only used our hands."

That night we slept naked for the first time. No shirts. No boxers. Just skin against skin under the covers. Her ass pressed into my still half-hard cock. I woke up twice to the feeling of her grinding back against me in her sleep. The third time I stayed awake and rubbed the head of my cock between her cheeks until I came again, coating the cleft of her ass with warm cum. She didn't wake up. Or maybe she pretended not to.

The next morning she walked into the bathroom while I was showering. Stepped right under the spray with me. Her body was soft and warm against mine. Water ran down her tits and over the curve of her belly. She soaped up her hands and washed my cock like it was the most natural thing in the world. Long slow strokes. Then she turned around and bent at the waist, hands on the tile wall.

"Wash my pussy," she said.

I did. Fingers sliding through her folds under the hot water. She was already wet again. I pushed two fingers inside her and fucked them in and out while my other hand soaped her tight little asshole. She moaned loud enough that the neighbors might have heard. When she came she pushed back hard onto my fingers and her knees almost gave out. I held her up and kept rubbing until the aftershocks stopped.

We didn't fuck that morning. We just dried off and went about the day with the knowledge that the line had moved again. Masturbation was not incest. Touching was not incest. Coming on each other was not incest. The rules were ours to write.

That evening we ordered pizza again. Sat on the couch naked this time. No pretense. Her legs were open. My cock was hard and resting against my stomach. She reached over and started stroking me while I fingered her. Slow at first. Then faster. She climbed into my lap facing me, her wet cunt hovering over my cock without taking it inside. She rubbed her slit up and down the length of my shaft, coating me in her juices. The head of my cock nudged her clit with every pass. She came like that, grinding against me, her tits bouncing in my face. I came a second later, shooting thick ropes up between our bodies, coating her stomach and the underside of her tits.

"Still not incest," she panted against my neck. "We didn't put it in."

We kept going for hours that night. She lay on her back with her legs spread wide and I knelt between them, jerking my cock while staring at her open pink pussy. She watched me the whole time, two fingers buried in her cunt, the other hand pinching her nipples. When I came I aimed at her and covered her clit and folds with cum. She rubbed it in like lotion, pushing some of it inside herself with her fingers. Then she made me lean back so she could do the same, straddling my thighs and rubbing her dripping cunt against my spent cock until I got hard again. She came twice more that way, soaking my balls and the sheets.

By the third night the tension had become unbearable. We were in bed again. Naked. Her back to my chest. My cock nestled between her thighs. She reached down and guided the head so it rested right against her entrance. Not inside. Just pressing.

"Corey," she whispered. "If I put just the tip in... is that still masturbation?"

My brain short-circuited. "I don't know."

She pushed back. The head of my cock popped inside her. Hot. Tight. Wet. She gasped and froze. I froze too. We stayed like that for a full minute, just the first two inches of my cock inside my twin sister's pussy. Then she started rocking. Tiny movements. Taking a little more each time. I could feel her walls stretching around me. Hear the wet sound of her cunt accepting me. She reached back and grabbed my hip, pulling me deeper until I was buried to the hilt.

"Fuck," she breathed. "Your cock is inside me."

"I know."

"This is... this is still not incest. Right? We're just... using each other to come. Like masturbation but better."

I started thrusting. Slow at first. Long deep strokes that made her moan every time my balls slapped against her. Her pussy was perfect. Soft and gripping and so fucking wet that it dripped down my shaft onto the sheets. I reached around and rubbed her clit while I fucked her. She came hard within minutes, her cunt clamping down so tight I almost lost it. I held back and kept going, pounding her harder, the wet slap of skin on skin filling the dark bedroom.

She rolled onto her stomach and I climbed on top, driving into her from behind. Her ass was perfect under my hands. I spread her cheeks and watched my cock disappear into her pink hole over and over. She pushed back to meet every thrust, moaning my name like a prayer. "Corey... fuck me... use my pussy... fill me up..."

I came deep inside her. Rope after rope of hot cum pumping into my sister's cunt. She kept grinding back, milking every drop. When I pulled out a thick river of white leaked from her stretched hole and ran down her thighs. She reached back and scooped some up with her fingers, then sucked them clean while looking over her shoulder at me.

"Still not incest," she said with a wicked little smile. "We just came together. Like always."

We didn't sleep much after that. I got hard again watching my cum drip out of her. She rolled onto her back and pulled me between her legs. I slid back into the mess we'd made and fucked her slow and deep while staring into her eyes. She wrapped her legs around my waist and held me close. We kissed for the first time that night. Soft at first. Then filthy. Tongues and teeth and the taste of her own juices on her lips. I came inside her again. She came with me, her nails digging into my back.