This catches you by surprise and you reach out again but this time I take your hand and lead you off of the desk. Your looking at me as tho you don't ...now what to expect. I turn you facing the desk, you seem to know what to do so you bend over showing me your lucsious ass and spread your legs, so I move in again to massage your pussy with my hardness then pushing my way in very slowly. The warmth of your body, the heat of your wetness, smell of sex in the air. The feeling of anticipation begins. Working for you then she said looking at my bulge in my trousers. Well we were talking about some of the happiest times of my life together with some of the most memorable sexual experiences i'd ever had, she obviously remembered them fondly. We had finished the second bottle of wine the film was half way through i had a stonking hard on and my sister was teasing me with glimpses of her lovely tanned legs i so wanted to put my hand between her legs and finger fuck her straight away. She went. The view greatly improved when she straddled the log again, to sit on the shorts she had laid across it. She started slowly fingering herself, bringing the lips of her pussy open to his view as she ran her fingers up, down, and around the full length of her vulva.She loved the sight of his hard cock, and the way he slowly stroked its full length, and circled the palm of his hand over the huge bulbous tip. He loved the sight of her obvious wetness, and the way she circled, rubbed and lightly. With a lustful look she turned her back to him and bent slightly.Searching between his legs she pulled his cock out. It didn't take long for her to have his cock hard. Then she slipped his cock into her already wet pussy."Grace, Thomas will be back soon," he protested weakly as he continued to fuck her.She ignored his warning. "I need you now," she whispered. "Fuck me. Fuck your wife."Grace began to move back and forth. The air was quickly filled with their groans of pleasure. As the excitement.