I've just turned 27, and I thought I'd share some of my first experiences regarding the relationship I had with my step sister who we will call Linda. We sat down and had a chat about the stuff we used to do even though she's too old to experiment with her brother anymore. I took what she said and wrote her point of view into the story, which she helped to edit.

Originally we met when my mother started dating her father. She was a few months shy of 7 and I had just turned 13. While I was a little tall for my age just pushing past five feet, she seemed a bit short for seven. Our first meeting was after our parents had been dating for a while and all our mutual siblings got along very well that night. I didn't originally start out considering her attractive in a sexual way but she was cute. Short cut red hair with green eyes and just a few slight freckles which she eventually grew out of or were over shadowed by her tan from playing soccer. She had an older brother, Bradley, and I had an older sister Samantha and a younger brother David. That night all the kids had a sleep over in the den of her father's house. There was a shortage of floor pads so we piled on to the air mattresses that were inflated in front of the tv. We played kid games and laughed and joked until about midnight when some of the younger ones among us started dozing off. Myself and Bradley were about the same age and ended up on separate mattresses. He and David and Samantha shared most of one and overflowed onto the one occupied by myself and Linda. Happenstance placed Linda on the outside of the mattresses and we cuddled under one of the many shared blankets that sheltered the mass of sleeping kids.

At the time I was just discovering sex so I didn't think much of the situation but I did notice myself getting hard when we were in full body contact. Nothing happened that night, except that a precedence was set for sharing a bed. Which was enough for something to develop later.

Over the years Bradley Samantha and David began to spend more time at the opposing birth parents homes. No ill will or anything, no fights over custody, just that Bradley liked living with his mother more, Samantha and David liked living with our father more. Probably because of the lax rules if you ask me but I liked having some responsibilities and keeping the house up. Being the one around when Linda came home from school and helping my new step dad with 'man chores'. Fix this, climb on the roof and get that, kill that spider, carry heavy stuff. (Sneak a beer when mom wasn't around) Good times.

Linda and I had rooms in the basement, our folks were two floors above us. We discovered that with locks on our doors it was easy to spend the night in each others beds and still be able to sneak back into our own rooms if the folks came down to wake us up. Don't get me wrong we were caught in each others rooms sometimes but I don't think they ever suspected either of us had slept there. We could play it off pretty smooth.

That's all it was for the longest time, two kids who, let's face it (probably had some emotional issues) cuddling up at night. As time went on and I started to date and get into girls it started getting a bit more awkward having Linda's panties on top of my boxer shorts all night while I played the big spoon. I didn't actually participate in any, 'adult activities' until I had turned 18 and was in my last year of high school. As the lanky nerd in my graduating class I had some of the same confidence issues I'm sure everyone suffers. But at least the kids as tall as I was had basketball to help them get laid. I couldn't play ball to save my life. So there I was, on track to graduate a virgin and sleeping with my little sister. At this point it was maybe once or twice a month I slept with Linda. She was about to turn 12 and I had thought she didn't like sleeping with me anymore because the novelty had worn off. That or her budding breasts embarrassed her when I found out she had worn her bra to bed with me one night.

Here's where our story joins hers, I'll let her catch up.

Nothing against Matt but he and I remember things differently for obvious reasons. He doesn't remember that the night we met I purposefully sat next to him. It was actually a pretty silly crush I had developed on him over the few hours I had known him that prompted it. I liked his spiky hair and his pale blue eyes. I almost secretly hoped our parents wouldn't make us brother and sister so I could look him up later in life.

"Oh hi Matt it's been a while we should go out sometime." I knew I was to little for a boyfriend at the time. I was a pretty aware girl as a result of my brother Bradley's porn obsession. I never watched it with him or did anything but asked him to tell me stuff about it from time to time. Which is how I knew what the hard thing in Matt's shorts was that night we cuddled up for the first time.

I was a little terrified and excited when I felt it and realized he was hard. At first I thought that he and I were going to have sex that night and was worried I'd get pregnant like my cousin Melissa. (She was 19 at the time, I didn't know about how that all works just yet, sue me for being 7). I pulled his arms around me to make sure he didn't climb on top and rub against my tummy until he got me pregnant. But nothing happened. He went soft eventually and nothing rubbed on my tummy that night except my own hands.

I loved sleeping with him from there on out. As he got older though he would put me off. "I just want to sleep alone tonight" or "I have to get up early" or "its too hot to sleep together". All excuses to me as I grew slightly taller. That time he talked about where he noticed my bra was actually the first night I had it. I didn't know if you're supposed to sleep in it or not. (I have since decided, not). But all those excuses made me think he didn't like me as his sister anymore. I knew by now most siblings don't share beds but we were really close and I was understandably upset on a few occasions when he said no. So I started anticipating when I would want to sleep with him and make him promise beforehand just to make sure. I didn't have to think of any horrible consequences should the promise be broken, I've never known him to break a promise. Although at the time he started to make up loopholes to try and escape them.

"Tonight we sleep with the window open it's my room."

"I'm watching scary movies tonight do you still want to sleep with me?" All ways of trying to get out of it.

I'm taking the story back over at this point. Linda I knew was starting to get clever. There were nights I really wanted to sleep with her so I could feel her legs, toned and tanned by playing soccer 5 days a week. He thought I didn't notice at night, but I did. One night I wasn't particularly in the mood and I had a crappy day so I thought I'd shoot for the moon and see if I could either A get her to sleep in her own room or B get a little more for sharing my bed. So he tells me that if I'm going to share his bed tonight we're both sleeping naked.

Honestly I thought he was bluffing so I said yes. I climbed under the covers and had frankly forgotten my bluff when she came in to sleep with me. Friday night our folks had gone out and me, lacking the social life as I did I decided to pop in some lethal weapon movies. In comes Linda, 70 pounds of eleven year old girl in a big t-shirt and panties and climbs in my queen size bed next to me.

I had hoped that he had forgotten about this rule he'd set but from talking to him now I know that he was trying to drive me out for the night. I climbed in his bed and hugged him close like I usually did and was relieved to see that he had his clothes on too. (and secretly disappointed) At this point she pointed out I still had my clothes on and asks if it's okay that she does too.

No I said nothing you just got up to turn the light off and close your screen door and took your shirt off and came back just in boxer shorts. I'm pretty sure you said something.

Anyway we cuddled in the bed for a little and I was a bit afraid to bring up the subject thinking she'd probably never sleep with me again if I did, and one night of not wanting her around wasn't enough to make me want to ditch that forever, especially now that she was starting to grow some boobs under her training bra. I tried the teasing approach as Roger was trying to talk Riggs out of disarming a bomb.

"Hey how come you're not naked you cheater" and I stuck my tongue out like she usually did.

"Well you're not either," I said after waiting a few seconds.

"Well it's my room so you should take your clothes off first."

After waiting a little while with her cuddled up next to me I thought she had called my bluff and I put it out of my mind. About the time the two busted cops were harassing pedestrians for fun she says, "Can you please go first?"

Shocked and a little pleased I thought about pushing it but I was under the covers so if I wanted to sleep next to a naked body I was going to have to take the plunge. I pulled my boxers off, slid under the covers and cuddled her up next to me, waiting for her to make a decision. It took her all of the armored car chase to tell me she was too embarrassed. That's not what I said, I said it would be too embarrassing to take my clothes off myself. Close enough. So she asks me to take them off for her.

I pull the covers back and start with the t-shirt. I reach over her back and unceremoniously pull it over her head like a hockey jersey. And there's my little sister with her barely there boobs, short red hair, and farmers tan from playing soccer sitting cross legged with her lime green panties. At this point the blood rushes to two places in my body, my head which turns my face red and makes it start pounding, and my cock which gets hard and starts throbbing. And I start blushing until my skin matches my hair.

He has me lay back and stick my legs out over the bed. I put a finger under the purple elastic of her panties and start sliding them down. I'm about the see my first pussy and its on my baby sister. It's a little too dark to see well but the tv lights up the room enough to see her tiny lips with just the slightest hint of fuzz starting to show. I slide them down off her legs and let them fall to hang off her feet over the side of my, way too high off the ground bed, until she kicks them off onto the floor. At this point I wasn't terribly anxious to let him see me so I crawled back under the covers and felt what it was like to have full body contact with someone, with my brother Matt, without clothes on. It was also the first time I felt a dick as I came up and laid my head on his stomach and bumped it into my mouth and nose.

For a time we just cuddled, his hard dick inches from my face was a little distracting but I changed position after a while and just laid on top of him like I usually do, my stomach on his chest his dick on my stomach his leg between my legs. When the movie was about half way over Matt adjusted how I was laying on him. In the usual way he pulled me up closer to his face, normally I had panties on so when he laid hands on my rear or put his arm under my cheeks it wasn't that awkward. This time he pulled me up and over his body by grabbing both halves of my butt spreading them apart and pulling me up so my head was next to his and his dick was between my legs.

It took every ounce of me to not feel up every ounce of her. A new movie was called for as Lethal Weapon had ended. Now some people would have put in a porno, as I was too chicken to actually own one, that wasn't an option. Instead James Bond took a spin in the dvd player. It didn't take long for a sex scene to come up. I'd been hard for nearly the entire time Linda had been laying on top of me and I really needed some relief. I told Linda I needed to do something to stop being hard and asked her if she would close her eyes so I could.

I did at first. After I sat up and sat cross legged with my legs under the sheets I felt the bed start to shake. His dick was getting solid again and I could see he was starting to sweat as he jerked himself. It was the most erotic thing I had ever seen. My heart was pounding in my chest and I felt myself getting wet. I hadn't ever been able to orgasm on my own up to that point but I had rubbed and fingered a little bit trying to reach it. I was torn between trying to finally reach it now and waiting until my brother was no longer watching. He was doing it himself now so I didn't think it would be that different but I couldn't bring myself to do it, just like I couldn't strip in front of him. He had his eyes closed and was going faster and faster. I reached out and he stopped when he felt my hand on him.

When I saw the lithe form of my little sister on all fours silhouetted by the tv reaching out and putting her hand on my cock I almost lost my load right then. I took my hand away and let her explore it. She felt up and down the shaft, touched the head with the tip of her finger and pulled away a small string of pre-cum on her index finger. Her cute face turned into a bit of a confused frown as she wiped it on her chest, probably out of habit of wiping odd bits of things on her shirt. Her short red hair was already messed up from our hour or two of cuddling. It stuck out at odd angles, laid flat in others and as she started rubbing me like, I'm assuming she saw me doing, her hand reached down between her legs. Like it seemed she had done before. As she began going faster I reached out and started rubbing her wet pussy and clit.

He means to say he started out rubbing my clit but he started inserting fingers only moments after. Truth be told I probably could have made him cum faster if I hadn't been distracted by his finger invading me. A finger which shortly became fingers causing my legs to buckle. I collapsed on his bed and he went into a frenzy fingering me and feeling up my chest. I gasped and struggled, part against his fingers and part to just stay on the bed. My legs seemed to have a mind of their own kicking out in every direction. My back arched every time he plunged his fingers deep inside me. I groaned and moaned and gasped trying to maintain as much composure as possible while my brother fingered me. He fingered me harder than I have ever had the courage to do myself. Then all of a sudden, trying to sort through the mess of sensations, his felt blanket and cool cotton sheets against my now sweating back, his pillow under my neck and head, occasionally folded over my face to practically scream into, his sheets popping and snapping as I pulled them off the bed in my desperate grasps for something to hang on to, I felt that sensation I had nearly been able to reach on my own. I gave myself over to it and within a few more minutes of Matt's manic fingering I cried out loud shocking him into a momentary pause.

I thought I'd seriously hurt her. The shout caused me to break out of my horny frenzy. I saw the tears in her eyes and running down her face, clearing a path through the beads of sweat that had collected while she writhed in my bed sheets. I felt a moment of horror then I felt her pussy contract around my fingers. Her eyes rolled into the back of her head, her waist pushed back against my fingers, she bucked like an angry pull and as I started on her again I felt a small squirt leave her and land on my arms and chest. My little sister laid on the bed panting after the end. She moaned and whined as I withdrew my fingers. We sat in stunned silence while she recovered.

I started crying. I don't know why. Matt tried to comfort me as best he could with his raging cock straining for relief. After we hugged in silence for about an hour of the movie, and the credits were beginning to roll the clock upstairs tolled for midnight and we knew we still had three hours before mom and dad got home. I was still wet and horny despite how sore I was, I wanted to cum again and I knew Matt did. I reached out and started rubbing him again. He got hard again. I knew it wouldn't take him too long. As I rubbed him the true shock of the night happened. He reached behind me and lifted my chin and kissed me on the mouth. I stopped rubbing him and took a moment to collect myself. I'd never been kissed before. I went to kiss him back and missed by a long shot practically getting poked in the eye with his nose. I tried again after we stopped laughing and we tried again, slower. I stuck my tongue out and we french kissed and starting making out in earnest.

I completely forgot how badly he needed to cum until he rolled on top of me and I felt him poking at the entrance of my pussy. Pregnancy with my brothers baby flashed through my mind but I ignored it in favor of having sex and cumming again. I wrapped my legs around him and tried to pull him in but as short as I was, trying to get him in me and keep making out was getting to be pretty impossible. He stood on the side of the bed, pulled me over and tried to get inside me.

My first few attempts missed. Linda helped by spreading her legs as I got the first inch or two inside her. Despite the fingering before, I knew this would be a stretch for her. I'm not particularly big but it was enough to cause some, probably pretty serious discomfort as I tried getting inch by inch inside her. As about 4 inches were in I laid on top of her so she couldn't slide and pushed myself inside her with one foot against the wall. Once I was inside her completely I took a look at her face. Grimaced and strained as she tried to contain me I slid a little out slowly, and back in. In typical awkward nerd fashion I just said "Thank you Linda. I'm going to go a little faster now."

She nodded and I slowly increased my pace. Stroking in and out over several minutes until I felt smoothness and, although it was tight, I was able to get in and out. My lust took over again, and I started to pound her. Each entry solicited a grunt as I felt her building toward another orgasm.

It only took a moment to build toward my own, and I felt like our shared first experience should at least merit one for each of us. I had to stop several times to keep from cumming early. I even had to pull halfway out and grasp myself to, pardon the expression, choke the orgasm back down. Doing this it took longer than I expected and as I felt her building to an orgasm she began to moan and writhe just like before. She bucked and I felt her squirt run down my leg. I knew I had my opportunity now. I started to pound this little step sister to my hearts content. At that time I knew I was risking actually hurting her but I didn't care. I almost didn't care when I heard our parents come home early, walking around upstairs, but I just went faster than I thought I could. I covered her mouth to stifle her noise and a few minutes later I came inside her, I felt like I came gallons. I stayed inside her until I went soft and fell out.

As I lay there with my brothers cum leaking out of me I heard footsteps upstairs and panicked. I shot up out of his bed and went for the light switch. I stumbled at first, already starting to feel sore from my first fucking. When I turned on the light my first thought was, "I hope they don't come down and see this." My t-shirt was hanging precariously behind his desk, my panties, I couldn't even see. I felt his come start to leak down my leg and I knew I had to get to the bathroom and clean up.

When she turned the lights on, I panicked as well. For similar but different reasons. I had blood on my fingers that I had used on her, on my sheets, and on my cock. I had just fucked a girl, a girl to whom I was legally related, that was six years my junior. I would be in so much trouble if she decided to tell someone. There would be no hiding it. Linda ran across my hardwood floor, over my rug, and out my sliding screen door so she could climb back into her own window just as there was a knock on my locked door. I threw on a robe and opened the door to see my dad, well step-dad, standing there.

He looked a little out of sorts, a long night on the town, and as he started to say something he took a deep whiff. My entire room smelled like sex. The door to my room didn't have a direct view, thank goodness. My closet protruded from the wall a few feet and prevented him from seeing my sisters clothes, where ever they might have ended up.

"Do you have a girl in here?" he asked.

I looked down, thinking I was busted.

"Aaah you DID! It's about time Matt. Hope you had fun. Did you at least make sure your sister didn't spot you two?"

Took me a second to realize he thought I had gotten a girl my own age. A bit proud of myself it took me a second to reply.

"Yeah I lent her some movies. She went to bed a bit early."

He shuffled his feet and looked down the hall to her room.

"I'll let her sleep then. Don't keep your lady waiting." He slapped my shoulder and he turned to go up the stairs. I shut the door and breathed a sigh of relief. Didn't matter that he was a computer programmer, if he knew I'd fucked his little girl I'd be dead. But I'll share more later....

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First story. Hope you all liked it.