This story is dug up from our past. It was the early eighties and York looked a lot different in those days. The area in question was close to the river and some nice new apartments now sit on the site of a former factory belonging to Terrys, the chocolate manufacturer who had a small works where their mints were made. This was where a narrow lane ran through to Clementhorpe from Bishopgate Street, adjacent to Skeldergate Bridge. There is a tree in a garden which may have been replaced but still appears to be the same one. The story is about my now wife and I having some late night fun. We only lived a few hundred yards away at the time and often had an after hours soiree in Rowntree Park but that is another story or two. On the night in question we had been planning a last hour drink and I had been playing a bit of porn on our video player, a bit grainy but that was how vids were in those days, no hi def images showing close up cum spraying, more the impression of what was happening through a blizzard, Back to our bit of fun. We were not strangers to having another cock for my girl friend to play with and she knew when I had something dirty lurking in the back of my mind. We left our house and went to Skeldergate and the Cock and Bottle for a couple of drinks. It was rather quiet being mid week and we sat drinking and watching a few couples. Dawn asked me what I had gnawing away at my perverted brain and I said she was going to be tied up somewhere that she might be seen by someone and left it at that. She did not appear perplexed or unwilling, rather curious as to where or when this was going to be done. I do love her submissive side but would never let her be harmed or do anything she was not comfortable with. Total trust required, on both sides, obviously or risk a serious freak out or even worse. Drinks consumed and mildly merry, we left the pub and wandered towards the bridge, kissing and groping each other, she rubbed my erection and said something like look what I've found. My reprise was to go beneath her skirt and find a commando pussy leaking juices quite freely, we were both on heat for our fun. It was going on for midnight and as the pubs were shut, only a few people were about. We went under the bridge where the road then turns sharp right and cars and bikes can emerge up the side of the bridge to Bishopgate Street, then an elevated footpath on a bank covered by trees and in those days lit by one measly light. Where three or four houses stand now, was a derelict area and our tree standing back from the road but reasonably close to the footpath. Anyone passing could glance sideways and see what was happening. We walked slowly up the path and I produced a length of rope with a running bowline already attached, I slipped it on her wrist and tightened it, telling her my plan so far, that she was going to be tied to the tree which we were approaching. We stepped past the old railings and were hidden from the footpath by a six foot brick wall on the lane side, but were exposed to the road and footpaths facing the road. We could see both directions but nobody was about so as Dawn probably assumed it was just going to be us, she allowed me to lash her to the tree with her back to the main trunk. I looked around, still nobody, so I kissed her and undid her skirt, getting it off and leaving her naked except for her stockings and suspenders and her loose top and bra. Getting her top undone and releasing her bra, I exposed her nudity to the night air and anybody fortunate enough to spare a glance in our direction. A taxi passed but nobody looked. I left her tied and exposed while I moved away to get a better view of any likely lucky guys. I was fifteen to twenty yards away and then saw a lone walker coming over the bridge towards us. I returned to Dawn and gently touched her pussy, it was very wet. I told her that someone was approaching us and she was a very naughty girl for getting herself in a state that meant she might be seen naked very soon.I told her to think she might even get fucked. I knew these words would get her excited and I heard her breathing heavily. I tightened the rope, not too tight, but so she was unable to cover herself, then I said I was going to leave her to her fate and that she must let the man touch her up if he wanted to. I got onto the lane and walked away from her, leaving her naked except for the white suspender belt and stockings, which seemed to glow in the dark and took what would be a two to three minute walk round the block when I would return via the footpath from the opposite direction. I walked fast in case the lucky guy had second thoughts if he saw me. I was twenty yards down the lane when I turned in the shadows and saw he was indeed going to pass her very close. I stopped and listened, nothing. And then a quiet whimper and some low talk. My mind ran amok thinking of my lovely Dawn naked and letting another guy touch her or even better, screw her. I decided I should continue round the walk I had planned but I found myself walking twice as fast as I intended, wondering how far my plan had worked because there were so many possible variations and pitfalls. At last I found myself with a raging hard on only ten yards from seeing exactly what was happening. Three four five paces, I slowed, happy I had chosen silent footwear, another two shorter steps and I saw them, him standing close and touching her, fingers deep in her cunt and my lovely Dawn moaning softly as she was played with by this stranger. I stopped and checked round, still nobody to spoil the moment, and he was getting his money's worth, she was being brought to orgasm, which I think she was on the brink of when I left. I knew this was a key moment. Should I join in or just watch. I chose the latter as I do love seeing her being fucked and I knew she was up for it this particular evening, given the build up. His jeans were loosened and though I could not see too well as he was partly with his back turned, I could hear the conversation. 'Do you like this?' 'Yes' 'Do you want it in you?' 'Yes' 'Can I fuck you?' 'Yes please put it in me and fuck me I want fucking with that lovely cock now' I was beside myself, everything was like a dream, he let her ropes loose and she bent down and sucked his cock. He kept saying I can't believe this, its unreal. He was getting his cock well serviced and he must have been almost as excited as I was, when he said turn round and hold onto her tree. She took the position and I got a glimpse of his cock, about the same as mine, as he got behind her and shoved it deep in her cunt and fucked her, both of them gasping and writhing happily.he did not last too long and soon he surged deep in her and groaned loudly shooting strings of hot come deep in her, Dawn trembled and came too, obviously happy for the outcome. He was very quickly zipped up and away. He passed me and jumped a bit, I said goodnight and he disappeared into the night. As I got to Dawn, she called me a bastard and then kissed me deeply, grabbed my cock which I had just released and drew it into her. The slippy mess felt smooth and I went in very easily, also coming far too soon for my liking, but we dressed quickly now our fun had ended and walked home, agreeing it was a one off and we had enjoyed it. A great adventure which we had a couple of versions of but I never left her alone again as she said it could have been scary. I had to agree but we did have fantastic sex that night with a rape type scenario with just the two of us and she came like a train after gushing for the first time.