My wife and I have an agreement over our sex lives which basically allows me to raise sexy ideas to her and if she is in the mood, then game on. This particular day dawned and she turned over and suggested we 'did something' that day when she returned from exercising. We both use the gym and have kept ourselves pretty active and not too bulky though i could use losing a stone or two. After breakfast I mentioned that perhaps we could visit a park but with her wearing one of her fun dresses and little else. She then said 'You mean flashing?' 'Well yes if the omens are right' She said the park might be full but I said that when I had run round it the previous week it was almost empty until the kids kicked out of school so if we went around lunchtime or a wee bit later we might be lucky. At around eleven she said she was going for a shower and change. I was hard immediately as this is when I begin to work things out in my mind. I decided this was going to be a bit hit and miss as most sexual encounters are not broad daylight affairs, more often around dusk or darker for best results, however I just hoped that one of the local nursery schools was not having a sports day, but that was a risk and I knew one or two schools had cancelled sports day as it was deemed too hot. I heard her leave the bathroom and go into the bedroom, then half an hour later she came downstairs in a button through light summer dress which ended above her knee a couple of inches. She looked very sexy to me, and to my mind any red blooded male who saw her. I suggested a couple of buttons could be released at the bottom. That was it, her mid thigh was now visible and from experience I knew that two more would have her trimmed pussy on show. I left that for later and gave her a hug and told her how lovely she looked. My hands detected no pantie line or bra strap. My lovely lady was naked beneath the minimal dress and ready to flaunt her assets. The park was a short drive away and thought we should be discreet among our neighbours. Nobody was out but discretion is always best. Within five minutes we were in one of the car parks with just a few cars scattered around. The wind had got up a bit and I thought how convenient this would be. The grassland was scorched yellow brown, no gardeners tending the borders, a cafe open but half a mile away. A couple of men were playing tennis and we passed a bowls game about to start. Thinking how the cars were situated in the car park it was relevant to assume the bowlers had abandoned there motors anywhere but between the lines. Walking across the open grassland towards the lake, there was the welcome shade of some huge beech trees and horse chestnuts. A man was on the boating lake rowing sedately across towards the far bank. Just as the wind picked up and blew Liz's dress open. I saw an opportunity and said 'What if you undo another couple of buttons and walk round the lake towards that guy out there, he might get a lovely view from his position'. 'Where will you be?' 'Over by those trees' I said pointing a likely vantage point. The buttons slipped open and I got a flash of her cunt. 'Beautiful' I said and left in the opposite direction, the rower not aware of what was happening for his benefit right behind him. I set off at a quick walk and soon was concealed among the low hanging branches of the horse chestnuts. Liz had gained ground and aided by the wind, her dress gaped perfectly. The rower was resting with his oars drawn in, he was drifting slowly towards an island where Liz was shortly to come into view. My angle was not perfect and I was beyond range of listening, plus the rustling in the branches as the leaves crackled left me with no chance of hearing anything. He had seen her and the wind was doing its best. A couple of stronger gusts dragged her dress open, revealing her entire groin area. I could see her trimmed cunt hair and I saw the man was transfixed by the sight. Liz walked on defiantly, leaving her dress to do its thing, even her bum was exposed by one gust as her dress rode up to her waist. The guy in the boat made a comment and she replied. She continued her walk to my rendezvous point and she said he had invited her to the cafe for a cuppa. She said why don't I give her fifteen minutes and join them, then strode off towards the cafe. She had done her buttons up after she left the lakeside which saw the rower, a man in his late forties at a guess, rowing strongly towards the boat house where the attendant was obviously given the lowdown on the flashing female who was now half way to the cafe. I broke cover and sauntered to the cafe area as well and saw them sitting in the open, cups and cake on the table. Liz excused herself and went into the toilets. I hung back as I knew she would send a text. She had got back to the table before my message came through 'He likes what he has seen, so why not come over and see if anything is going to happen'. I got to the table and Liz introduced me and said that Gary lived quite close by and wondered if we would like to have a drink of something stronger at his' 'Love to' I said not wanting to seem flaky 'It's a lovely day for it' giving a broad smile hoping he knew that I knew what was happening. We set off for his house which was only about three hundred yards away. We spoke a bit of small talk and some double entendre to break the ice. Soon he was pulling out his keys and opening the door to a terraced Victorian house with nice cool high ceilings, decorative plaster work and nice large doors. He went to make us drinks and when they arrived he offered to show us round his house. He was a cabinet maker by trade and had made all his own furniture and it was splendid. Gary asked if we would like to see more and I said they could go on while I visited the loo as I needed a pee after all the tea. I used this as a ploy for them to get a bit more acquainted. From the understairs cloakroom I heard them mounting the stairs and him saying she looked lovely. By that I assumed that she was leading the way and he was now getting the perfect view of her naked arse and her uncovered cunt as she walked upstairs. I stayed silent, not flushing the loo even so I did not break the moment and heard them murmuring and then silence which I took as them kissing. I opened the door quietly, praising his joinery skills at having doors that did not squeak or creak. I knew they were on the landing above me and by the sound of it they were getting to know each other very well. The tiny but unmistakable sound of her being fingered was music to my ears. Heavy breathing and whispering and then a heaven sent message. I heard something falling and then with a light flop saw her dress drop to the stairs in front of me. 'In here' I heard him say and then the sound of a door closing and locking. I picked up her warm dress and folded it neatly and took it back into the lounge. They must have been in the room directly above as I heard a bit of shuffling and then the bed creaked a bit. I decided to go upstairs to listen if I could not see her being fucked. The closed door was just on a half landing and I heard the muffled sounds as they played with each other. I was in heaven, my wife naked with a stranger she had met less than an hour before and she was obviously sucking his cock as he voiced his appreciation. Then he gave her a good licking which she really loved given the noise she made. Then the crescendo, his cock filling her cunt with his shaft and a ten minute shag that had the headboard rattling. As the noise stopped I heard her sighing and giggling and Gary saying how much he had needed that. I stole back downstairs as I heard them moving around. I had just got into the lounge when the door opened and they descended the stairs. Liz led the way completely naked, just her shoes on her feet. Gary had his trousers back on but not zipped up and his shirt was out. She had the tell tale red neck and face flush and he was dishevelled. A classic sign of a good fucking. Liz laid on the sofa and said 'Sorry you missed the fun, but as you can see Gary has fucked me very nicely' 'Sorry mate I just had to have her' he said to me. i added that I had instigated the flashing and so was responsible and Liz had obviously liked the episode so nobody had any cause for regret although I would have enjoyed seeing the fun, the fact that it had quite obviously occurred was compensation enough for me and if he did not mind, I would like to clean her up. Liz got my tongue and his come tasted good and she dressed and took his mobile number for a second session to be arranged later. .