Rob was well in the rear. When they reached the backroom, it was pitch black. A hand reached up and pulled Rob down. The flap on the girl’s sleeping...bag was pulled open, and the body within was warm. She soon had Rob out of his clothing, and the touch of her skin to his was electric.He had never had so much as a makeout session with a female before and now he was bare chest to bare chest with a real live girl. She was kissing him so hard that she seemed to want to pull out his tonsils. Should. We remained motionless for what seemed like hours, as we both savored our first union.Moments later my sister rolled her hips in a circle, and leaned down, whispering "Damn, you've got one fucking huge prick, Marty!"I smiled happily, this was the first time I'd been with a girl, and up until the moment Susan said that, I had been a little insecure about what girls would think of my cock.Now it was time for some serious fucking. So Susan began rocking, at first in a slow, but steady motion, back. "I knew this was part of a plan for him to fuck me. I had always fantasized about him, so I just went along with it. "Mmmmm you like it?" I teased. I saw his junk was hard through his shorts. I pressed my round tits to the glass so they smashed up against it. "Ohhhh you wanna tease me like this bitch? We'll see about that," he said and yanked down is shorts and boxers so he was naked.He climbed in the shower with me and pressed his wet naked body to mine. Our lips met and I sexily slid my. After dropping the last of his clothes on the floor at the foot of bed, he crawled up on to the bed, trying to not disturb her sleep. When he was next to her she stirred and murmured — the sheet slipping down over her shoulder to reveal that she wasn’t wearing her normal bundle of bed wear. He couldn’t help himself as he gently pushed the sheet further down her body, until her breasts were revealed to his suddenly hungry eyes. Her eyes fluttered open and she looked at him with an unfocused.