This was a surprise to me. My wife rang me on my mobile to say she was invited out for dinner with a friend. I asked who this might be and she said that I should not be surprised that it was a guy she called Simon who had been trying to date her for a long while. My recollections were that he had been into her work a few times as a rep and had been trying to charm her pants off for at least six months. I asked where she was going to be taken and she said she had no idea and had accepted his invitation in a sudden whim of desire as she had noticed a sizeable lump in his trousers which she thought might be worthy of attention. As she is a fifty five year old woman with a well kept body, size twelve and 5' 6" tall with a nice pair of breasts, I knew she was capable of attracting men of all ages. Her friendly nature usually meant she was happy to have a bit of fun as long as they did not push too hard too soon. I got home after six to find her in the bath with some c,othes laid out on the bed ready for the evening date. I went intothe bathroom with a gin and tonic for her and gave her a kiss hoping to find out more of her mystery date, but little was forthcoming except that she intended to have fun and maybe more after the dinner. He was coming to the house for her in his car in just under an hour. Liz had said that she had told him I was away, so I had better make myself scarce for when he arrived. I put the car in the garage and said I would call round to our local a couple of hundred yards away and have a game of darts with a mate who was always in early doors until about eight thirty. Watching her drying herself having shaved her pubes neatly and carefully, exposing her lips giving a lovely sight to my eyes. I had no jealousy, just the hope that she would enjoy her night of fun. I witnessed her preparing her body for him, creaming all over to make her skin soft and smelling beautiful. I was invited to do her back and enjoyed the heat of her body against my cooler hand. She felt lovely. I watched her put on her thong, bra and hold up stockings, suggesting that maybe a suspender belt might be better and her calling me a dirty bastard. I mentioned that it would drive him wild especially as she was going to wear a skirt with a very revealing wrap over style, and that once he got sight of that she might get fucked in the restaurant. She smiled and said that it would be a way of not leaving a tip, making us both laugh. I love a light hearted approach to such evenings as I believe smiling reduces intensity and encourages relaxation, more especially when the outcome was leading to sex anyway. As she applied her make up sitting in her undies, I gave her a kiss and asked if she did have some fun that if he did not mind, I would love some pictures of their fun. She said not to expect anything and you won't be disappointed. With that I departed down the road and round the corner to the pub. Mick was in and we had a game of darts before he suggested we sat outside as the sun had come out and the wind was dying down. There were some girls outside and we spoke to them. Mick was trying to chat them up, but I think his beer gut was preventing any possibility of him enjoying a bit of fun himself. my mind really was not on any opportunity for myself as I was constantly wondering what Liz might be doing. A glance at my watch told me she would now be in his company and the wait had begun. I had spent a meaningful hour and a half with an increasingly desperate Mick when the girls departed en mass and left us alone in the beer garden. Mick suggested a best of three quickie of darts and I agreed before returning to an empty house, having a quick chat with a neighbour who mentioned he had seen my wife drive off with another guy. I smiled and said she was going back into work for a meeting due to problems and the guy was giving her a lift as I had been boozing. He did not question anymore and I went into my house and the glorious mind blowing waiting to discover if she was having a good time. It was almost ten thirty before I got a message. She asked if I might make myself scarcs again as she was bringing him home. The text was staring me in the face and it was a minute or so before I threw a hasty plan into action and replied. I said it would be dark enough for me to hide myself in the garden and if she could, to keep him in the back room overlooking the patio, where I could easily be unseen behind a large pot with a big palm in it, a perfect concealment and the fronding allowed good vision, I knew because I had done it before. Thankfully I had not trimmed the hedges yet and they prevented any nosey neighbours from seeing me in a bit of a compromising position voyeuring on my own wife in my own house. I threw on a dark fleece and turned off the lights, locked the front door and left the back door open for when they returned home. It seemed ages before the car headlights swinging into the drive hailed their arrival. I was outside and with the back door locked before they got out of his car, in fact I heard the thump of the car doors as I took up my concealed vantge point. A minute later she led him into the back room, putting a sidelight on and then exchanging a long kiss. I saw his hands already wandering and no rebuttal from Liz so assumed they had been engaged in a bit of fun before they had come back. I knew the details of what I had missed, if anything would be revealed when we were together later, when that might be I could not tell. She sat him on the sofa and put on some music, then left the room. I saw the kitchen light come on and saw her making drinks, she looked into the garden and I stepped into her view and showed her I had my cock out, she smiled and left the kitchen. I renewed my vigil keen not to miss anything. Simon ran a hand up her skirt as she sat down next to him. As they were slightly side on to me I could not see all, but by the position of his hand, it had to be close to her thong. He said something to her and she laughed, then stood up and spread her skirt open, showing the suspender belt I had suggested she wore. She looked gorgeous and I found my breath held as she unclipped the top of the skirt and let it fall. He immediately stood up as well and placed a finger inside the leg of her thong and spread it to one side, exposing the brazilian trim and her lovely full lips as she was hugely turned on. He tugged her thong down her thighs and she stepped out of them and then helped him release his trousers, pushed them down and made short work of his boxers as I saw his cock exposed and stiff. I eagerly awaited the next move. Liz went to her bag and got her phone out and then took a picture of his cock before passing him her phone and sitting on the sofa, exposed her wet cunt and let him take a picture of her willing and ready sex. He took a couple of pics and then she resumed her strip, taking off her top and undoing her bra before allowing him to pose her and take some more pictures, one of her sucking his cock, a healthy seven inches or so, not a monster like some lucky girls have, but nicely comfortable and very willing as she was about to discover. Taking the phone from him, she played with it for a few seconds whilst laying back, legs splayed and Simon's head quickly descending to her gash, licking and teasing as she wired me the pictures. Then she resumed watching him satisfying her. She did not take long to come and I heard her yell of excitement over the music as she writhed and gushed over his face, the splashes quickly leaving a damp stain on the sofa cushion and carpet. The lovely sight of my naked wife with a now naked man had me stroking my cock almost too much, but I left it alone to make my over excitement subside and allow the exquisite agony to be prolonged, after all tosee your wife enjoying sex with another guy does not happen every day and when it does, it is a thing to savour. They took up a sixty nine position and I got a great view of them pleasing each other, his cock disappearing fully down her throat, her fingers tickling gently on his ball sack, a pleasure I can assure is fantastic, his face plastered flat aginst her cunt and then nibbling very gently at her distended lips, or tickling her clit, all helping her stay on a high. I knew I would see them fuck sooner or later and after a lovely session of mutual adoration, they moved into a long kiss and then he sat on the sofa, cock in the air, Liz turned her back to him, and then sat slowly onto his prick, letting his shaft slowly sink into her cunt. She lay back, then fingered her clit gently as his cock pumped in her deeply, all the way to the end of his shaft, his balls were hanging low and looked full of come. Their rhythm increased and then he said something to her and they quickly turned into doggy position and he sank into her deep and fast as she lay with her head over the back of the sofa and he fucked her hard and long. They changed positions a couple more times and then she took his cock back in her mouth and he shot his spunk down her throat, swallowing it all, then sucking him clean. As they parted, he sank into the sofa completely exhausted and whispered something to her, they kissedagain and he snuggled against her tits, sucking on a distended nipple and making her laugh. She reached for the mobile and sent me a text to say I should remain outside until he had spunked in her which would be about another half an hour or so. I saw her put the phone down and resume her efforts on his cock, getting a quick response from semi hard to rampant with a few strokes and words of some promise maybe, whatever it was, it did the trick and he was ready to screw again well within five minutes. This time it was dirty raw sex, both of them kissing and playing with the other, making them squirm and giggle, her mouth sending him into raptures and his tongue reciprocating and slowly getting her back to high state where she was able to come again. The session was quite noisy for her, but he was in heaven, squeezing her tits and getting a tit wank from her when she sucked his bell end each time he thrust up between her sexy breasts. He said something but was refused by Liz and then they fucked again, Liz laying on the floor and taking him missionary on the carpet as he groaned and clenched his arse cheeks together as he spent his spunk in her again. Some spunk trickled out as he withdrew. A slow recovery and then she suggested it was time he left. I saw him dressing, sorry it had to end but the night was getting a touch cold and soon he was gone and I was in her arms recalling a sexy show and a fabulous experience