It was incredible.After dating and screwing for a few months, I asked her to go steady. She laughed and said only if I had four cocks because it usual...y took that many guys to keep up with her. I persisted in dating her and she gradually developed special feelings for me, partly because I was accepting of her sexual needs.We graduated and she wanted children so we married. They never came, apparently because her IUD caused sterility. We swapped with various couples, she made sure any male. ‘Yes Rob, now! Fuck it, fuck my arse, hard!’ So, taking a firm grip of her hips I began to do just that, fuck her, fuck her arse, as she wanted me too, hard! I could hear myself making loud, guttural grunts as I forced my cock deeper, the hot tube-like tightness of her arse triggering more of those incredibly intense shocks of pleasure-pain. Feeling another, less intense, but additional source of similar feelings each time my achingly swollen balls slapped hard up against her bum-cheeks.. The biggest danger came from the fact that they would have to slow down to get over the bridge safely.She waved the other vehicle up close to their side and shouted out the plan to the people on the other tractor-trailer. Once she was sure that they understood the plan, she sent them a little bit away to increase the gap between the two vehicles, but still keep them at her side, just safely separated a little bit more.Dammit, didn't that tank ever get tired? It had been running for quite a. She wearily stripped out of her work clothes and headed for the bathroom.Stepping under the hot streams of water, she closed her eyes and relaxed. Allowing her mind to drift, feeling the warm liquid cascade down her body, she began to think of him. Imagining his blue-gray eyes gazing upon her, his muscular arms wrapping themselves around her, she feels the heat begin to radiate from between her legs. The thought of his hot breath on her neck, his hands slowly sliding down her hips and across.