For the longest time, I knew I had a second sister. But I didn't meet her until she just turned 15. And being 17 myself, I was still young and confused about some things, and was still reaching my sexual peak, as puberty had not yet completed it's transformation upon my teenage body. Her name is Melinda. The first time we met, we hugged of course. But I never even saw her until she was 15, so it was a hard thing to process finally meeting her. What was even more difficult to handle was the way she looked. Oh my dear lord!!! 5 foot 5, 135 pounds, double D cup tits, long black hair, completely flat stomach, and an ass that just wouldn't quit!!!! It was difficult not checking her out, as she is my sister. But not being around her all those years, I guess it never registered. So I just saw her as some hot chick. What made it even worse, whenever we stayed over at a relative's house ( which will remain unnamed), we had to share a bed. And if you could only see what she had on that day... Dressed just like a classic farmer's daughter look. Her tits were just pouring out of her shirt, and her shorts revealed some of the most gorgeous legs I have ever seen, not to mention the very bottoms of her ass cheeks as well. Her hair was even done up in high pigtails. My god was she hot!!!!! Well that night at said relatives house, we had no choice but to share a bed. I was extremely nervous, as you could Imagine. We layed there for hours talking that night. Then the first awkward moment happened. I couldnt help it, but I had a rock solid erection. But this girl was fucking hot!!!!! I tried hiding it, which I did a pretty good job of, until she rolled over to face me and accidentally bumped my dick. Our jaws both dropped simultaneously, our faces both red from obvious embarrassment. I had no idea what was going through her mind after that, but my sister had just found out that my dick was hard for her. It was extremely too awkward after my own sister had accidentally touched my hard on, even though she's the one that caused it, and I'm almost positive that she knew that it was direcly because of her, because after she rolled back over to go to sleep, she said softly, but very sarcastically "well, at least I know you love your sister". Then she giggled a little bit, and started drifting off to sleep. We didnt speak for the rest of the night after that, and I couldnt sleep for the life of me, but she was out pretty quickly. Its obvious what I did as soon as I knew she was out cold. I knew it was wrong, but I just couldnt help myself. I was so careful not to shake the bed, but I masturbated to an extremely intense orgasm... right next to my sleeping sister. I had no idea what she was going to say the next day (if anything) about the night before. But she didn't say a word. It turned out that instead of saying something about it, SHE DID SOMETHING ABOUT IT...
The next night, after staring at her ass all day again, I was out in the living room of the apartment and she went for a shower. I have no idea why she didnt notice the full lenghth mirror hanging across from the bathroom doorway. And the way the apartment was set up, if you sat on the end of the couch, you could look right at that mirror and see in the bathroom, which luckily did not have a door on it from it needing repaired. I knew It was wrong, but I just couldnt help myself. There she stood, taking off her tight black tank top revealing a pink lace bra. "Should I look away?" I asked myself. But I just couldnt. Then the bra came off. To this day, I have seen very few sets of tits as perfect as the ones I saw that night. But I just couldnt look away. That's when I saw her perfectly hard and round nipples and my cock began growing rapidly in my jeans. Then, her tight blue jeans came off to reveal that she was not wearing any underwear at all, a big, thick, black bush making its appearance. I couldn't believe that watching my sister get undressed for a shower would make my dick so hard!!!! Then, it happened. She looked up at the mirror and saw me there, sitting on the couch with my mouth hanging open from just being caught staring at her still developing naked body. But for some reason, she did nothing about it. She just stood there, watching me staring right back. Instead of covering up, she slowly started rubbing up and down her stomach making her way up to her tits with both hands. She then started playing with her nipples, and smiled at me. She then turned around and bent over to pick up her towel, and gave me an awesome backdoor view of that sweet little pussy of hers. The whole time she just let me watch without saying one word. Then she did something I thought she would never do, especially this being my 15 year old sister. She sat down on the toilet and spread her legs wide open!!! She then pointed at me through the mirror, then pointed at her own crotch. Then she started rubbing herself. I just couldnt take it any more. I pointed to my own crotch, the whole time her watching me stare at her in amazement from the couch while she masturbated on the toilet from the view of the mirror. She nodded her head in approval, and I wasn't going to hesitate, I will tell you that much. I immediately pulled my dick out from my pants, and her eyes widened with shock, as I am a little bigger and thicker than average, as other women have told me. Slowly we touched ourselves, not believing what the other person was doing. Here I was, sitting on a couch, getting caught peeping on my 15 year old sister, and a mere 10 minutes later we are masturbating together!!!!! Faster and faster we went, her face contorting with obvious pleasure, not once taking her eyes off of my now leaking cock, biting her lip while thrusting and grinding on her fingers, she let out the sexiest moan I had ever heard as the orgasm took over her body. I could feel myself getting closer to cumming as well, and then it hit me... The fact that my own sister was openly let me watch her masturbate herself to orgasm was too much to bear, and my balls started that ever pleasurable feeling of the mounting satisfaction that was about to occur. At this point, I started jerking even faster. Then what she did next is what finally put me over the edge, with no chance of pulling myself back from cumming. When her orgasm was over, she slowly pulled her fingers out of her tight little teenage cunt, and a massive amount of her pussy juices just slowly started dripping out of her. It started its way down her leg and past her knee when she took her hand and wiped upwards towards her pussy again, which obviously had just given her a massive orgasm judging by how much came running out of her. After making her way back up to that forbidden paradise she calls a vagina, she dug two fingers in again one final time, and with one long, slow wipe, collected as much of that sweet, sweet nectar as she could, and smeared it all over both of her tits, then sucking her fingers clean afterwards. That's when I couldnt hold in my load for even one second longer, and the wave of ecstasy hit the tip of my dick so intensely that my muscle contractions from my orgasm were strong enough that my cum shot out of my dick and the stream made it to my face, IN FRONT OF MY SISTER. She then leaned around the corner and threw a towel at me and said "nice job. I didn't think my brother would have such a huge cock." I proceeded to wipe myself clean as she started the water for her shower. We haven't repeated the actions of or spoke of that night since.
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