"I do it all the time, there are plenty of people on there looking for threesomes and foursomes or wanting to get knocked up or to fulfill some other ...ink." He added. So I went home to check it out. I answered several ads and got a reply to one. A older couple looking for a guy to fuck the wife while the husband watches and maybe get into a three way thing if the wife wants. "We are new to this" stuck in my head. We sent several emails to each other and decided to meet. I was afraid that it. Your sister?"After a few moments of studdering and obvious confusion I managed to say " Oh hi Dahlia.. I missed you too..Wow..hum.. you grew up.. a lot." She gave me a warm smile and hugged me. Since I was still lying down when she hugged me, she was positioned as if she was about to straddel me. Forgetting she was my sister, I could only think about her breasts on my chest and her crotch pressing against mine. I used all my strenght to not get a boner.When she got back up, dad called us down. She left me on th first step and returned to the bottom and tuned round. As very tall, l could see my cock was in her face. I knew what was coming next and without saying a word opened her mouth and put it round my cock. She was sucking the end and tonguing up and down my shaft. I could feel myself getting ready to come. She must have known this,stopped and squeezed right behind the end. She kept doing this as she went underneath and licked between and all over my balls. A flash in my mind made. A number of the younger girls came up to Rose and it seemed to her, they hung around longer than what would be considered just politeness. She thought about what Kathy had told her that one day and earlier in the evening. She also noticed that when some of the younger girls seemed to be getting too close, Kathy would grab her hand or rub her arm. As the evening wore on, Rose noticed women leaving in couples and that the party was beginning to thin out. Kathy had stayed close and had hugged her.