The affair started two years ago, Helen was the receptionist at the local colour lab that I used. She was about my age and very attractive with long dark hair, slim but with good curves. We often chatted and flirted as I waited to collect my prints. One lunchtime Helen informed me that one of the printing machines had broken down and my prints would not be ready for another two hours. I said that I would go to a pub for lunch while I was waiting. Helen said that she was just about to have her lunch break so I suggested that we go together. We drove to a country pub about three miles away. Over lunch we got to know each other. We were very similar in many ways, she was married with two daughters, I had two sons, I also learned that her husband although a good provider to his family was not very romantic and showed little regard for his wife.She confided that they hardy ever made love to her as he was always too tired We returned to the lab but not before making a date to do the same the following week. Over the next month or so we grew closer and after lunch we used to sit in my car kissing and cuddling, one afternoon I placed my hand on her thigh,I expected her to push it away but she surprised me by pulling it under her skirt and pressing it tightly against her pussy, I slid my fingers under panties and stroked along her lips before slipping two fingers into her. She parted her legs slightly to make it easier for me and pulled her panties to one side and soon she was shuddering as she orgasmed. She lay back in the seat as her breathing returned to normal. She reached over to me and after glancing around to make sure that there was no one in sight in the car park she unzipped me and freed my cock from my trousers. She lowered her head onto my lap and sucked my cock into her mouth. I was so excited that it only took a few minutes before I warned her that I was about to cum. She continued to work on me with her mouth and hand and I jerked as I shot several streams of semen into her mouth. She sat upright and I assume that she must have swallowed all of my semen. We decided that we must find a way to get together properly, I suggested that I could book a room at a local Travelodge but she said that she might be able to fix an alternative venue. The next day she phoned me and asked if I could take the following afternoon off, this was no problem for me as I am self employed, I met her near to the lab and she guided me to a small block of flats a couple of miles away, we parked at the back and she retrieved a key from where it was hidden. We took the lift to the top floor and she unlocked the door of a very smart appartment. Helen explained that it was owned by a good school friend of hers who was a barrister working in central London. The flat was therefore empty from seven in the morning until eight in the evening. Almost as soon as the door closed behind us we were tearing at each others clothes, Helen looked stunning naked, her breasts were larger than I expected and had large brown nipples, her pussy was crowned with a small neatly trimmed patch of black hair. We rushed into a bedroom and fell onto the double bed with her on her back. With almost no foreplay I pushed my cock into her, we fucked like rabbits until she came noisily, before I came inside her a few seconds later. We had not bothered with condoms as Helen already knew that I had had a vasectomy a few years previous. We lay on our backs next alongside each other as we relaxed. Helen then led me into the en suite shower where we washed and explored each other before drying off and returning to the bed. This time we took our time, I soon dicovered that Helen was very fond of oral sex, both receiving and giving. We spent a long time in a sixty nine position, where my tongue and fingers managed to get her to orgasm again. I managed to control myself because I wanted to fuck her again. I lay on my back and she lowered herself onto my erection. I was able to reach up and caress her breasts as she slowly raised and lowered herself on me. I could feel her cunt muscles gently squeeze my cock until be both came together. She collapsed on me and thrust her tongue into my mouth. After dressing and tidying up, Helen gave me a brief tour of the luxury two bedroom flat. I noticed several photographs of a good looking blond woman in exotic locations such as New York and Sydney, she said that they were of Ruth, the owner of the flat. We used the flat on average once a fortnight, sometime early in the morning before Helen had to start work, occasional afternoons and even for quickies at lunch time. One week in the summer we even made use of the flat every day as Ruth had gone away on holiday. Helen was a fabulous lover, there was very little that she would not try, on one occasion Helen arranged two arm chairs facing each other about four feet apart,We were both nude, Helen sat opposite me her legs spread and began to stroke her breasts and pinch her nipples as her other hand was playing with her pussy, I watched as she stroked herself and parted her lips before sliding her fingers into herself. She ordered me to start playing with my self, I licked my fingers and took my prick in my fist and slowly started to wank. I watched as she brought herself to orgasm, she then encouraged me to finish myself off which I did until I covered my stomach with semen which she then licked clean. Another time when we only had a short time one lunch break, as soon as we had closed the door she lifted her skirt and showed me that she had no knickers on. She reached into my trousers and pulled out my prick, bent down and licked the purple head then turned around with her hands against the wall, I found the opening to her cunt and pushed into her with one thrust. It only lasted a few minutes before I came. She turned around and I could see my semen running down the inside of her thighs. She used her fingers on herself until she too came. Helen took some tissues from her bag and wiped herself clean before she returned to work. The most amazing afternoon was a few months ago a few days before my birthday in May. She phoned me and asked me to meet her at the flat at midday, she said that the door would be unlocked and I was to walk straight in. I closed the door behind me and saw Helen sitting on the bed wearing the white La Perla bra and panties that I had bought her for christmas. She told me to stop and undress in the hall, this I did while watching her as she unhooked her bra, I walked towards her with my cock erect, she reached for it and put it between her lips before getting me to lay on the bed. She removed her panties and climbed onto the bed, straddled me and moved up so that her cunt was just above my mouth, she lowered herself onto my lips and I pushed my tongue into her, she guided me so that I was able to run the tip over her clit. Her thighs were gripping the side of my head tightly so I was unable to move. I felt her hand stroke my prick, then what felt like lips moving along the shaft before entering a warm mouth, I struggled to move Helen off me, so that I could see what was happening. She lifted off me and I looked down to see that my cock was deep in the mouth of a blond. She lifted her head away from me and said hello, I recognised her as Ruth from the photos in the flat. Helen whispered to me that this was my birthday present, she moved down and joined Ruth working on my prick. It felt amazing to feel two tongues and two pairs of lips on my prick. They stopped for a while and Ruth explained that she had just finished a long difficult, complicated court case and was in need of some relaxation and was not in a relationship at this time. Helen had offered this meeting as a thanks for the use of the flat for the past eighteen months. As Helen knew this scenario had always been a fantasy of mine so I was delighted. Ruth was little shorter and had a fuller figure with much larger breasts than Helen, I asked who wanted to be fucked first, Helen said that it should be Ruth. Ruth stood up and removed her bra and released her great tits then pushed down her panties. Unlike Helen, Ruth was fully shaved, she climbed onto the bed and waited on her hands and knees while Helen took hold of my cock and guided it into Ruths waiting cunt. I pushed gently into her as Ruth moaned. I started a slow thrusting movement and leant foreward so that I could cup her breasts as they swung back and fore. Ruth had her face buried in a pillow as she thrust herself back at me. Helen slid her head under Ruths hips and I felt her hot breath on my prick, then I could feel her running her tongue along my shaft as I was fucking. From the sounds coming from Ruth I could guess that she was close to orgasm, with cries of YES, YES, YES, she shuddered as she climaxed. I continued to thrust into her, Helen was licking my balls as I felt my balls tighten I withdrew from Ruths cunt and Helen pulled me straight into her warm mouth as the semen spurted out of me. As usual Helen swallowed everthing. Over the next two or three hours we tried almost evey combination and position that we could think of, I found that both Ruth and Helen were also bi as they demonstrated by going down on each other while I watched. It was obvious that this was not the first time that they had played games like this. Helen later confided to me that they had occasioinaly had threesomes when they went on holiday together to Spain when they were in their late teens. I lost count of the number of times that the women came. I myself came three times that afternoon, a birthday to remember. I,m not sure how much longer I will be seeing Helen as her husbands is about to be relocated north, Helen has said that I should keep in contact with Ruth. In fact I am due to meet her next week.