I might be addin' me another entry into the mile-high club tonight."I'd already gotten the run-down on Mark's alleged sexual trysts onboard previous a...rcraft. Mark was one of those guys who had a pussy story for every occasion, each more fabulous and unbelievable than the last. He'd fucked on airplanes, in elevators, in the bedding department of Macy's, on a train, in a car, in a hot-air balloon, in his cubby at work, at the dentist's office. He even claimed to have fucked on the observation. *I spent a tortured hour in my bedroom. I hid from my sister, mind in turmoil over what I’d allowed. I cursed my weakness, running the events over and over inside my head. From time to time, I groaned in despair, anguish squeezing my guts.“Go away,” I said when my sister knocked at the door.It was typical of Cate to ignore me and the door swung open. “I wanna talk,” she said as she walked into the room.“Put some fucking clothes on,” I spat when I saw she was nude.My sister gave a half-shrug.. That was something I'd not thought about before but seemed incredibly sexy, knowing how it felt to orgasm but to do so in someone's mouth or even, I wondered, have someone do it in mine!After a while Tom got up to make a cup of tea but I remained, naked, in the living room and started slowly stroking my hardening penis again. When Tom came back in with the tea I was wanking enthusiastically and almost ready to come again. 'That looks amazing Simon' he said and sat next to me as I stroked myself. I was turned on beyond rationale. I don’t think I had an ounce of control left in my body. Sister or no sister, this girl in front of me wanted me and I wanted her.My hands shot into her pants and onto her ass in no time. Grabbing and kneading her cheeks as much as possible and pulling her harder against my hard cock.She humped back. She was pushing her pussy so hard onto my cock that I could feel her pussy lips separating and her intense heat surrounding my cock’s head.No more than moments.