I innocently undid the buttons so as to release the pain, by this time my sister was just laying down and just enjoying the pressing of her back, it w...s 6.30pm, it was winter time so the light was very dim outside and the bedroom light was off, only the light of the hallway shone in, I asked is it better she said yes, I innocently moved on top of her she was still facing down on the bed as I did not want her to see what I had done to my jeans buttons it was just to relive the throbbing pain. The only thought more frightening was that this would be our only night. The second dance was more like it. She never allowed me to leave the improvised dance floor as a slow song came on. She molded her body to mine. We said nothing as I drank in the smell of her intoxicating perfume. The way her body melded to mine had a predictable effect and she let out a soft breath as her body swayed against mine with even more pressure. When that dance was done, she pulled her face back to look in my. Due to this intense slow fucking i was about to come already. I said her that i was cumming and she was pushing her self towards me more making my cock to go deep inside. Suddenly i shot my cum inside her with load moans. I was thrusting my cock or some last drops to come out. I fell on her ,crushing her boobs in my chest. We smiled and i kissed her ,it was almost 12 now and i should get going to my house i said to her. But she was making me horny by rubbing my ass and making my dick hard. Relieved I turned to move into the dining room, but Rachel stopped me cold with a simple Ed. She held out her hand and I helped her up and into a chair in at the table. I sat next to her and Becky sat opposite me, leaving the seat across from Rachel for Judy, who, true to her word, served us all up a terrific turkey dinner with all the fixings. We actually had a great time as all the girls went into talking mode, while I ate and listened to them chatter away about their lives, work, movie.