"You are mine." I said, pinching her nipples savagely. Her body bucked and thrashed in orgasm. The chair fell over backwards. She lost consciousness b...fore the orgasm ended. I untied her and lay her nude body on the bed. I wiped off the chair and sat in it ass-backwards, waiting for her to awaken.It was nearly time for the girls to be coming back when she awoke. Her movements were slow, lethargic, as if she barely had any energy. When she rose, her knees wobbled, threatening to buckle. I got up. I would guess each of you has watched a video of me having sex. I would be leery about having sex in front of Rachelle or Mary. Obviously I'm not shy around Shelly or Sarah, but that is more personal, you know."Actually, it might be that I would be uncomfortable having sex in front of Sean and Walt. I'm not sure. I didn't mind wearing a revealing swimsuit today or even my underwear tonight. Yet I'm not positive I would have joined any of you if you stripped down to nothing. Does that sound. Bob helped her on with her coat and they were on their way.On the drive to the party she talked about her family. Her father had been killed five years ago in a car accident. She lived with her mother and older sister who were all going out tonight. Mother was a CPA and had a boyfriend with whom she had been going with for three years and it looked like they were getting serious about each other.The party was at Jim's house. He had a large house with a fixed up lower level that was used as a. .. but why me?" I asked still thinking she wasn't being serious."Well, she likes you and I really think she has from the beginning. She knows that you are a good lover," Sandy said with a little wink and smile. "She really wants her first time to be pleasurable and I agree." But... but doesn't that bother you?" I asked incredulously."No, I love my sister very much, and we have grown very close. I also trust you and know you will be gentle." Wow!" was all I could say."Come on, it won't be so.