Chapter 1

"Ohhhh, fuck Davey, that is sooooooo much better."

I moaned those words quietly, drawn out, and breathlessly as my back arched and my hips twisted despite the heaviness of his upper body on my legs and especially with his face pressing hard between my thighs.

David was older but had an endearing awkwardness that kept him "real," he was almost completely unaware of his rugged good looks. As well he lacked the arrogance that sometimes is a trait of men like him.

I always told him I thought he had a natural confidence, although he said I made him nervous and unsure of himself. I told him it was my mission in life to keep him humble, but right now I didn't care if he was arrogant or not, what his tongue, lips, and face were doing to me was worth putting up with a little overconfidence.

When we were together, which was frequent, we combined very nicely. We had become very good at sex. Of course, we were getting a lot of practice.

We were both second-year kinesiology students at college, so we spent a lot of time together at school and were spending an increasing amount of time naked together, sometimes at home, and sometimes just wherever we could find space to fuck each other's brains out, his bedroom, my bedroom, the kitchen table, the car, the backyard, the front yard, the movie theatre. To say I liked sex was an understatement, David joked that if sex were an Olympic sport, I would be a gold medalist.

We were both about the same height, about six feet, blonde-haired, blue-eyed, and athletic.

David carried his 185 lbs. well in his shoulders, chest, and arms, although much lighter at 130 lbs. I was no less muscular but in a nicely toned and feminine way.

David kept his hair short and mine was long, almost always in a high perky ponytail.

Of the two of us, I had experimented more sexually, having various girlfriends and boyfriends in high school and our first year of college. In college, though, with our increasingly heavy course loads, we had been increasingly drawn together even more.

David seemed satisfied if maybe a little overwhelmed by my appetite and we had sex frequently during study breaks, many times we did more breaks than study.

I craved variety and more frequency than David could provide. With his knowledge and encouragement, I was enjoying being "loaned" out by David to our friends to allow him to get a break. He would often tease me about becoming a nymphomaniac, asking me if that was still just a thing or if was I just a slut.

"Nymphomaniac sounds better to me," I would always pout, "But I don't see you complaining Davey, and if I was a guy who liked sex, would anyone notice or call me a slut? I think it is a double standard."

Then usually we would make out some more, finishing with me sucking his warm cock or us fucking and him saying he liked me as a nymphomaniac. Other times he would say we were fuck buddies; I didn't care how he described what we were doing as long as we did it as often as we could.

Sometimes, I did wonder if there were actually something wrong with me, it seemed like I could never have enough sex, and male or female I was equally happy with either.

I actually googled whether being a nymphomaniac was still a thing? I decided I was me and if I liked sex more than other people, I was good with that and I didn't worry about being labeled good or bad.

David's stubble brought me back to the present, the small prickly hairs on his face felt like hundreds of tiny pinpricks on my smooth skin creating a delicious sense of pain and friction to contrast the utter pleasure his tongue was making moving on and around my tiny clit.

Both good students academically, we applied that same willingness to learn to the sex we shared.

We taught each other what we liked and wanted to try. David didn't mind my experience and experimentation and although he was somewhat hesitant and conservative himself. He also almost always encouraged me to push the boundaries of what was acceptable and sometimes beyond not only with him but with others as well. Just by being together our sex was certainly outside the boundaries of what most people would find acceptable.

Dad was at work, and Mom was off running some errands. We had the house alone for maybe an hour or so. It really wasn't enough time, but David had kind of insisted and who was I to argue with a good tongue-lashing.

With my eyes fluttering and my body flexing, I thought back to our first time. It had been shortly after our 18th birthday.

Thinking about it, it seemed like a million years ago, although it was less than two years ago. I remembered how we had been so excited, nervous, and afraid at the same time. We both knew what we were doing was so bad and if we got caught, the punishment would be unimaginable to us. I was the instigator, I almost had to beg David even to let me kiss him. Not only did he let me French kiss them, but I also convinced him to let me give him a blow job, although I did think he would pass out when he came in my mouth, and I swallowed all of him.

I knew I was the first girl he had ever fucked and maybe even the first girl he really passionately kissed; and now thinking back to it, I couldn't help but smile at how far we had come and was grateful I was that I haven't gotten pregnant.

We would lie awake afterward and he would make me tell him my experiences, from my first time to other times with my girlfriends and with other guys. No detail was too small and every time afterward he would devour my pussy, sometimes even after we had sex, David loved the taste of his cum and my juices and even he called them his cream pies now.

It was during those conversations that we talked about other people David might share me with.

At first, it had just been one or two close buddies, each of whom he swore to secrecy. Then, Rachel, the daughter of our neighbors. Rachel and I had already experimented together before David actually brought her up as a possibility, but Rachel and I were only too happy to let him watch and think it had been his idea. Eventually, the three of us then got together for an awkward but fun three-way.

As more time and partners came and went, David wanted me to be bolder, suggesting and helping me to seduce Rachel's mom Jennifer. Rachel helped with the seduction, arranging for me to be alone with her when she knew her mom was frustrated with her husband's fixation on just his pleasure, not Jen's. Jen was wonderful and so open with me.

We began by secretly kissing, then touching, and by the time she let me eat her pussy and orgasm, Jennifer was a member of our crew. We hadn't had a threesome yet, but David had spent several afternoons with her while I was at school and while Rachel and her dad were away for weekend sports events.

When we talk about our first time now, Dave cringes at how awkward he was. I always encourage him and tell him not to worry and remind him of my stories about how awkward I was when I was first seeing guys and girls. Now, especially when we study, he is always very studious and hardworking, while I am usually naked and rubbing myself on his bed.

He thinks nobody is as comfortable naked and masturbating as I am. I am a good student, but I am almost always horny.

In the months after, we did it again, and again, and again, every chance we got. David's talent and skills had noticeably improved as demonstrated by my throaty moans. I don't think he was awkward; I often replay that first afternoon after school in my mind.

Those few hours opened a door that changed our lives.

That the first time even happened was a surprise accident. It was the very first time I could remember David and me being left alone for any length of time. We both had to swear that we would not have any friends over. Like us, many of our friends had suffered because one or two teenagers in our neighborhood hosted epic parties that got out of hand while their parents were away. I think it spooked all the parents in the neighborhood, but no more so than my father.

I never expected them to leave me alone because despite my efforts to seem like a "good girl" somehow my reputation as a party girl had spread. I'm not sure both Mom and Dad heard the rumors and whispers about my willingness to try almost anything, but as I got older my dating rules became more rigid, while David who was always the good one, could do almost anything he wanted. I suspected David of hinting to my parents that I might be somewhat untrustworthy when it came to having friends come over, just to keep me at home.

That's why it was totally unexpected that only a few days after our birthday, we were sitting on the couch watching a movie, alone for the weekend while Mom and Dad were in the city overnight.

I really hadn't intended for anything to happen.

I was a little bored because I had seen the movie we were watching before and eventually decided to let David watch it and go have a shower. For quite a while, I had been intrigued by the idea of getting David to make out with me.

He was handsome, we both got along really well, and I had caught him many times sneaking a glance at my ass or the way my pussy looked in my tight jeans. I had never had a chance though because our parents would always be around. I thought this weekend might give us that chance. I thought David would need some coaxing though.

I had always been confident in myself and how my body looked; however, until just recently I had been a late bloomer. My quiet confidence had led me to explore my sexuality earlier than most; however, to be totally honest, I think my partners responded more to my willingness to do almost anything than they appreciated my meager assets. I was in good shape, had nice legs, and what I thought was a nice ass; however, I was not, as they say, well-endowed.

Despite my confidence, I had always admired my friends and how shapely their bodies were, especially in the showers after gym class. Most of them seemed to have had boobs for years but I hadn't.

Right up until graduation, David, aware of my experimenting, teased I was a "carpenter's dream - flat and easy to nail." Then, almost overnight it seemed, mother nature decided to finally give me breasts. People who hadn't seen me for a while seemed to especially notice them and I must admit I was constantly playing with them, including in the shower, and even that day as I walked away from David and the TV, I couldn't wait to masturbate myself secretly hoping David would hear me and investigate.

Unfortunately, I don't think David even noticed when I got up or heard where I said I was going.

I went into the bathroom and turned on the water. He later told me he wanted to try something with me but was afraid I wouldn't want to and worse tell Mom and Dad. If he had only known the truth.

In the bathroom, as I started to get undressed, I noticed the door wasn't locked and maybe that's what started everything. When I entered the bathroom, I guess I accidentally left the door unlocked. As I stripped down, I managed to keep one hand caressing and touching my boobs, cupping them, and gently rubbing my growing nipples.

My fingers, were constantly in motion, sometimes rolling my nipples with my thumb and forefinger, other times cupping and squeezing them. My nipples had always been ultra-sensitive, now with each touch it felt like lightning rushing through my body. I must have stood for ten minutes just touching myself, naked, feeling myself, all while nude in front of the mirror.

Little whimpers escaped from my throat and my mind changed gears trying to focus on a fantasy to take me to the next level. I wanted someone to see me like this, the background sound of the movie made me think about David even more. I wanted David to find me like this, to watch me, to touch me, to ravish me.

I figured what I imagined couldn't get me in trouble. Could it?

In my thoughts, I pictured him, watching his movie, then maybe hearing me by accident. I could see him pausing the movie, hearing me again, listening, wondering, and then noticing the slightly ajar bathroom door.

Curious, I imagined him watching the door, turning off the TV so he could hear better, listening and hearing me, but not quite understanding what the noises were. Finally, when he would recognize the sounds, I pictured him quietly slipping away from the couch and moving quietly to the door, standing just outside of the door, waiting, listening, and hoping to catch a glimpse of me naked and masturbating.

Then I could see David pushing on the door ever so quietly, praying for the hinges to be well lubricated; I smiled, well as least as well lubricated as I was naturally at the moment. I imagined him holding his breath, his hand slipping down and rubbing his cock, touching himself while he watched me touch myself.

I imagined him hearing my moaning, feeling the rise of his cock in his hand, and the corresponding increase in his bravery as he saw more of me. I saw him pushing the door open slightly more. Soon his pants were undone, his cock was fully erect, his knees wobbly as he watched me naked with my eyes closed, him watching me masturbate naked only feet from him.

Then unable to stand it, he slipped into the bathroom. I didn't even realize when I had moved from in front of the mirror into the glass-enclosed shower. Thinking of David watching me masturbate made the hot water touching me feel like a thousand little fingers, all conspiring to turn my heat up as much as possible.

Steam billowed and clouded the room.

I imagined David standing outside the glass doors, watching my fingers work harder and harder.

Suddenly it was all too much, and my knees collapsed, and I found myself kneeling in the shower with spray all over me while my body convulsed and shook in a very powerful orgasm that seemed to last and last. My breathing was labored, my pussy throbbed, and as it finally passed, I felt more invigorated than when I started.

The reality was different, but my imagination had given me motivation and strengthened my desires.

As my senses gradually returned, I realized I was alone, on my knees in the shower, water streaming over my body, my pussy was swollen, puffy, and red, and I knew I need to be fucked, fucked well, and fucked right now.

I turned off the water and dried myself somewhat off. Taking a towel, I wrapped myself, the towel barely covering my pussy at the bottom and the top just covering the pink of my areola. I knew this was my chance with David and I wasn't going to let it slip past, I stepped towards the open door, took a deep breath, and walked towards him.

I wasn't thinking, I was just doing.

In reality, David was engrossed in his movie, only barely noticing me even when I was almost in front of him.

"David," I had the opportunity, motive, and more than enough desire.

We were alone in the house; my thoughts became bolder by the moment.

In the past, when I had caught him sneaking peeks at me, he would always blush and look away, but there were moments I caught his eyes lingering longer at the indentation of my pussy when I wore tight jeans.

Other times, I caught him looking at my nipples protruding from my tee shirt before and after my boobs got bigger. Every time, he would blush, and more often, I could see him trying to hide, awkwardly, the growing bulge in his pants. I knew he thought I was sexy. He was always asking me questions about the sex things I had tried, and now I thought it was time for more than just quick glances and overlong stares.

I must admit, he wasn't the only one looking. On many quiet nights alone in bed, I pictured his body, imagined him touching me, exploring me, ravishing me. I had seen him in his bathing suit many times at our neighbor, Rachel's house. Rachel told me she had a crush on him and I teased her that she followed him around like a little puppy, to which she would spank me on my ass or punch my arm; but I always noticed how aroused she was when we talked about David, or even when she was just alone with me. Until now I had never acted upon my thoughts, now I knew I just had to.

"Maddy, what are you doing?" I realized I was lost in my thoughts, and he was talking, his voice hoarse and more and more excited. I saw his eyes focus completely on me and not on my face. I smiled a little because his face had broken out in a light sweat and he was very flushed, his words coming out in a nervous shudder.

Before I knew it, the towel was on the floor, and I was completely nude in front of him. David was speechless as his eyes drank in my toned and totally smooth body, my lower lips still a little puffy from masturbating and opening nicely like a small flower. Silence hung in the air. The cool air of the room and being naked made my nipples ache they were so hard. His mouth hung open for far too long. I took control and knelt in front of him and kissed him on the lips.

"Holy shit, Maddy," he said over and over again.

Tentatively at first, I kissed him some more, starting with just a series of small soft kisses, with each passing moment the kisses became longer and much more intense. He tried to say this was wrong, he shook his head and said some words, but the hardness I could see in his pants contradicted his words. We kissed again and I held a finger to his lips. He tried to deny me again, but I used my body to push him back into the sofa.

"Do you really want me to stop Davey?" I asked in a very low and quiet voice.

We kissed again, this time my tongue pushing past his resistance and licking his lips before penetrating his mouth.

"No Maddy, don't stop," he said so quietly I thought his voice was in my head.

I knelt in front of him, looked deep into his blue eyes, undid his jeans and he stopped trying to make me stop.

Now almost two years later, we were still going at it like bunnies, especially when Mom and Dad are away, and sometimes even when they were home. Although I didn't believe either one of them was aware of what we are doing, well certainly not in the beginning; Mom would have to be blind not to see my cum soaked panties or like today the dried cum in my sheets.

"Uuuuunnnnnnhhhhh," all thoughts of memories and thoughts disappeared from my mind as David hit just the right spot.

As David's tongue worked its magic in and on me, building me up in a series of waves that made me a quivering hot mess.

His fingers moved like each had a mind of its own one hand between my thighs and with the other he stroked my ass, and as he made me crazy with electricity, my eyes rolled back into my head.

I loved being eaten and especially when he teased my ass, for all my self-assuredness I knew my weakness was sex, I would do anything to get laid, my last coherent thoughts were wondering if nymphomania was still a thing.

As he guided me along the very edge of losing control, I managed to whisper a couple of words, they were little more than whimpers to David, background noise, and he kept on.

Without missing a beat, David shifted slightly and then moved around on Mom and Dad's bed. He managed to do so without breaking his tongue's connection with my little button, like I said, he has really gotten good at this.

I thought, "Davey, you are such a good boy," as my body suddenly shuddered one of his waves broke and I inhaled sharply and moaned even louder.

I felt his muscular body with my hands, running fingers over his smooth skin as he moaned ever so slightly. My touch lightly grazed his young muscles sending shivers of energy and excitement throughout his body. As skilled in oral satisfaction as he was, I could make him cum, sometimes within mere minutes, I always laughed and said, "Hah, your baby sister can get you off faster than you can make me cum."

"Fuck off, Maddy," he paused to stop and look up into my eyes, "Baby sister my ass, you're only a minute or two younger than me," and he slapped the side of my ass hard, making it tingle and raising my level of arousal even higher.