My wife has been telling her little sister, a senior in high school, all about our kinky wild sex life and the things I do to her for some time now. I found out because her little sister started flirting with me and I tried to confront my wife on it, that's when she told me she shares our sex life with her. She brushed off the idea that her little sis would flirt with me or ever do anything. About mid way through her sisters senior year she came to live is due to problems in the home and everything got worse. Her purposely walking in while I'm showering, catching me dick down my wife and her friend at the same time. She started laying by the pool nude when my wife was gone and wearing barely anything around the house. My wife's little sister is a knockout hottie with great smarts. She's roughly 5'5, blue eyes, lightly tanned skin, beautiful auburn hair down her back, some freckles on her face, no waist, a huge tight ass and large D breasts with all the "right" piercings all over.
Now I have always been faithful to my wife and spoiled her and her family. I treat her and hers all with a great deal of respect and humility. When I addressed the situation with her little sister, she questioned me saying "what problem do you have with me? Are you afraid you can't resist our sexual attraction? Are you worried we might get caught or that I will be better than my older sister?" Okay so I didn't break ground with her. When I went to address my wife about it, she scoffed at the idea and laugh saying "honey, you're an attractive man but it's all in your head, my sister wouldn't give you the time of day, plus I know you wouldn't have the balls to fuck her anyway!lol" at this point I realized I was winning and quiet frankly my wife had just pissed me off.
The following week my wife was flying back home to close up some loose ends with her old business and to visit friends. No sooner than when I walked in the door from dropping my wife off was her little sister laying on the couch naked. I told her that she needed to cover up or something. To no avail. Later that day I was out by the pool tanning, sipping whiskey and on the phone with my wife and her little sister comes walking out naked. Seeing in on the phone with her older sister she came to my other side and kissed on my neck and whispered dirty things in my ear giving me an erection. I tried to end the call with my wife but she just kept talking. Her sister came around and undid my shorts and started stroking my growing cock. I mouthed at her trying to say no. The she started sucking on my knob furiously. She was incredible. Already much better than the wife. As I was ending the call her sister was sitting down on my cock. **click** at this point I said fuck it. I helped her sit all the way on my cock. For the next half hour she rode my cock viciously, moaning loudly and shaking from pleasure. She was so wet and so tight, she was creaming all over my cock and I loved it. I took her in the house and I fucked that thick little ass girl from behind making her scream! As I went to finish she whipped around and sucked me dry swallowing all of it. The rest of the time while my wife was gone we fucked like wild rabbit porn stars on cocaine. We did ever dirty under the sun. We slept in the same bed I share with my wife. We fucked in the car, outside, inside, down by the lake etc. the last day before my wife came home she started riding my morning wood with a violent passion, I told her I was going to cum, she rode even harder, as I went to move her off so I could bust my load she held that pussy tight around my cock taking every shot deep inside her. She rode till it dropped out of her. "Thank you" she told me. Idk why I loved it so much but every time we fucked that day I let it all go in her. She said if she gets pregnant she'll just say it was from a one night stand with a random gUy. My wife has since returned and her little sister is still living with us, hot as ever and pregnant. No whenever my wife isn't around I have hot wild pregnant sex with her little sister I knocked up. Lol my wife said I didn't have a chance. How wrong she was.