It starts innocently enough, as an idea, then it gathers some momentum, and before you realize, it’s happening to you, and you cannot stop, because ...t’s dark and exciting, you know it’s wrong, but that’s part of the attraction, then it’s over, and you are now a statistic, here is my story.Mum had fled the nest with her latest toy-boy lover and a year had passed for Dad and me. Never awkward between us, but I was growing up fast and it showed, my mood swings, my first periods, and my changing. It caught Blair off guard as she was not used to this kind of sex.“Oh fuck your pussy is so tight, I’d never expect a slut like you to be this tight,” Mark said as he pounded Blair’s pussy with everything he had. Blair was unable to say anything as she held on for dear life. Mark reached up and grabbed her hair and pulled it back forcing her head up and back as he used his new handle to fuck her even deeper. With his free hand, he began to spank Blair’s ass repeatedly causing a red hand print. "Probably Sid," I whispered back to her."Oh, okay," she said. I let her watch for a couple more strokes, then nudged her onward towards my room.It wasn't until after we'd changed, peed, brushed our teeth and had gotten into bed that she said anymore about what we'd seen."I thought Kate was, um, with Gary tonight?"I shrugged. "Maybe she was, earlier. Maybe she ran into Tony on her way back to her room. Kate likes to spend the night alone, usually – she says she can't sleep well with someone else. I’ve never been the modest type so I did as I was told. I moved my penis and testicles down so I wouldn’t lay on them figuring that they’ve probably seen worse.The door opened and the lights were dimmed. She pulled out a warm sheet and draped it over my body. I didn’t see who was touching me but her hands sure felt good on my back.She quickly went to work and didn’t speak a word. I was as relaxed as I’ve ever been and was thoroughly enjoying a good rub down.Then she got to my lower half she.