Please don't tell her, I begged. He looked at me for a minute and said, what would you do to keep me from telling. Anything, I blurted out. Patting my...leg he said, we'll see about that. He stood me up in front of him and said to take off the bra. My hands shook as I unclipped it. He reached up and pushed it off my shoulders. He placed his hands on the creases the bra left. Tracing across my chest, around my sides to my back, he pulled me to him. Leaning down he kissed my chest. As he moved his. Her right hand is moving below my balls and towards my asshole. I moan in anticipation, knowing what is about to happen. When she reaches my back door, she circles it with her middle finger with light pressure. I am getting close from all her work on me and she can tell. So all of a sudden, she lets everything go and goes over to the night stand."We're not done yet!", she says.I can see that she is getting lube and a mid sized plug. She puts some lube on her middle finger and puts the plug. About 15 or 20 feet away was a hot tub. A very fit, tanned man with brown straight hair was sitting on the edge of the hot tub. He was facing toward my right so that he was in profile view. His head was tilted forward, his damp hair dangling about his 5 o'clock shadowed face. He was naked with a flat abdomen, his left foot planted on the cement in front of him, his right leg outstretched. Between his legs was a very shapely, very tanned-appearing woman. She was wearing a tie-dyed sarong,. I felt my cock hardening and I just had to keep reminding myself that this was my sister, not some hot teenage girl that any guy would kill to have."Aidan put your fingers inside of me," Tara begged opening her eyes and looking right at me."Tara, please don't make me do that," I responded weakly.Her eyes pierced at me. "Do it damnit!"I took a deep breath and inserted one finger inside of her. She felt a little tight and so warm. Small little moans escaped her mouth as my finger went inside of.