This is a story that happened many yeaars ago when my wife Helen was in her 30's. Helen is tall, has blonde hair and size 44DD boobs. She had often posed at home for me to take topless and nude photos of her but nothing stronger, this was pre digital camera days and anything risque had to be developed at home, luckily I had my own dark room and could process black and white film One week in the summer, I suggested that we went out for the day and take some pictures, so after packing my gear in the car we set off for a wood about 20 miles away. Helen was wearing tight blue jeans and a white halter top with no bra. After arriving, we unpacked the car and set off into the woods. As we walked I took pictures of the scenery and of Helen walking amongst the trees After a while we came to a small clearing and we sat down on the grass for a drink. I suggested that perhaps Helen could remove her top and I could take some topless shots of her amongst the trees, so after checking that we were alone, she removed her top and under my direction started posing for me. In some shots she was holding trees and looking sexily at me, in others she would cover her tits and pout at the camera. I asked her to ignore me and play with her nipples and breasts which she did. Now she loves having her nipples pulled and sucked and it wasn't long before she was feeling horny. I walked over to her and told her to kneel down and suck my cock which she did. She had been sucking me off for about 5 minutes and I was taking photos, when I saw a man standing just inside the edge of the trees, watching us. At first I didn't say anything but eventually I told Helen that there was a man watching us, She glanced in the direction I had said, saw him, but did not stop sucking my cock. I reached down with one hand and began playing with her breasts and soon had her moaning. Looking over towards the voyeur, I saw that he had his cock out and was slowly wanking. Again I told Helen what he was doing and she asked me if he had a bog cock and I said that it looked big. Helen moaned and told me to invite him over, so I indicated to him to come over which he did. Helen didn't hesitate and reached out for his cock and started to wank him. He in turn leant over and with both hands played with her tits. Helen then switched cocks and began to blow him. I started taking pictures of her sucking this guys cock and very sooh he grunted that he was going to cum but Helen shoved his cock further down his throat and with a loud grunt he came in her mouth and throat, this was too much for me and with Helen wanking me, I came all over her big tits. After a minute or two this guy simply said "Thank you" and after tucking his cock away, left us alone. We both had a bit of a laught at what we had just down and eventually we too got tidied up and headed back to the car. It was fun to develop and look at the pictures I had taken, but to this day I have no idea who this guy was.