More than 30 years ago I was dating the most beautiful blond in the world, quite why I gave her up rather than marrying her is beyond me and a lifelong regret. I was 27 with a promising career and D was eight years my junior though she told her parents I was only 24. She was stunning, witty, had the most beautiful body - and seemed to like me! We shagged relentlessly wherever and whenever we could. On my regular week day off I would pick her up from the back entrance to the college, take her home for her "siesta" and return her to the same entrance as classes were ending. D just walked through the college to the main entrance, got in her mother's car for the ride home and I would arrive shortly after and take her out for another ride, sometimes in the car or at my rented room. At the time I had an interest in old railways, the steam belching sort, and on one particular weekend I had wangled an invite to a party at a private railway I knew of around 90 miles away in southern England. We had been together long enough for D to know her way around carriages and these railways so the novelty for her was in the vast number of apparently single men involved. Of course, many were happily married but their wives had no interest in "dirty, smutty steam railways". Seriously, the male to female ratio at these places can be as high as 9.5 to 1 or more! Needless to say, D was the centre of attention all evening long and, to be honest, I can remember thinking that I simply couldn't compete with all this attention so gave up trying. ALL of them were trying desperately to get into her knickers but to no avail. As parties do the end came and we returned to the railway. Earlier in the day I had made enquiries about sleeping arrangements and been told "Just find yourself a compartment in a carriage. Oh, it will be warmer in the shed." So off to the chosen compartment we went, torches in hands. Loose cushions (it was first class, of course) were put on the compartment floor and we, er "settled down" for the night around 00.30. Not having had sex for nearly 24 hours I was feeling somewhat horny though I was tired from the countryside's fresh air, the long drive, and the nocturnal hour but somehow I valiantly managed to give D the seeing to that I thought she deserved - and, to my severe annoyance, promptly nodded off. Evidently, D was even hornier which was not at all unusual, and I was promptly awoken to perform again. After a drowsy fumble mother nature returned me to my slumbers and so D really got to work. I awoke to find that she had raised my flagging cock to its rightful 7 inch length and was humping up and down on it - and then she froze - we both froze! These sorts of places attract some real aficionados, experts in their own narrow, enthusiastic field and three had just tumbled in, turned on the lights and were discussing the detailed, very detailed, pros and cons of one designer's whatever with his successor's. Knowing how coaches are mounted on their wheels and that as this was a 50 foot coach it was on just 1 pivoting pin at each end we also knew that when we were shagging the otherwise empty coach rocked from side to side. We didn't want to attract attention lest we were in the wrong carriage as we had chosen the most sumptuous we could - for comfort, of course! The deeper cushions, the hard floor, you understand... The aficionados must have discussed, argued, got more heated - and one threatened to get in to illustrate some technical point - for around 20 minutes - and it was nearly 2.30 am - didn't these guys feel tired? - have somewhere to go to? Maybe a wife? A bed? Obviously not! As we lay there, frozen to the spot by their discussion, D started to shiver in the cold night air and ever so slowly began to move rhythmically up and down in a quiet way that I had not heard or seen before. The mere thought, and sound, of these strangers, the possibility of discovery and we both fucked, her beautiful body backlit by the shed lights, her breasts bouncing around and very quickly we both exploded. I was by now fully awake and we lay close together hoping that our movements hadn't been noticed by the experts outside as I pulled the blankets up over us again. Eventually, they departed, the lights went out and our silent giggles got a bit less restrained as we both kissed and nodded off. Nothing was said by anyone at breakfast.. Happy memories!