Going to the cinema back in the 70,s was usual for most unmarried couples, a good place to grope with no interruptions, we went most Friday evenings most other couples did the same, the place was never that busy so we had reasonable privacy. Fingering and wanking was quite easy as stockings were what the girls underwear at that time, my girlfriend had no problem with our antics and seemed to enjoy the experience, I got great enjoyment looking in between her her legs watching my fingers inside her knickers. The movies started to change and soft sex came to the screen, which made the cinema busier, so a bit more awkward but we managed although I noticed that a few single men where there, but they seemed intense on the film, although to my knowledge they weren't watching it excited me more. Next time we went and settled down and a couple were about six or seven seats away, this was quite normal and I thought nothing of it, the movie started and my hand was soon under her jumper feeling her through her bra, as I looked along the row I could see her skirt up past her stockings and his hand in between her legs, I couldn't help but watch, I'd never seen this before, my hand was now up her skirt and she was wanking me, my eyes were now transfixed on the other couple he had moved her knickers down to above her knees and she was pushing against his hand, I knew I was about to Cum but couldn't help it, the site was so erotic, they got up and left and I soon came over her legs. I couldn't get this out of my mind how watching turned me on, was this a one off or had I been to busy with ourselves, I decided to go to the cinema alone hoping for another show, but plenty of groping but nothing much else but I still managed a wank each time. This started me looking for other places to watch people, I went to parks on nice days and saw plenty of stockings and knickers as the girls lay getting some sun. My girlfriend asked I there was something wrong, why I asked, you seem different, I explained about the night at the cinema and how I enjoyed watching the other ccouple, and how I had been back and to parks to watch and wank, you pervert and left. That night had changed my life, I sometimes wish it had never happened, after a couple of months she got in touch. Let you know what happened.