Phil had booked us a meal at a very high class Thai restaurant, Kath was wearing her low cut black dress with a push up bra that gave the impression that her tits were about to fall out at any moment, she knows how much l love that outfit as the slightest movement sets her tits jiggling. Eva looked stunning in a bright green, almost sheer, mini dress that stuck to every curve of her body as if it had been painted on, it was also obvious that she was wearing nothing beneath it. Kath commented to me as we walked from the car slightly behind Phil and Eva that it was not like me to be so smitten with a young girl as she well knows my preferences. "Thought you like big tits" she said, l replied that l couldn't explain it but l found her exquisite. "Hopefully l'll find out for myself later" she said, giving my cock a gentle squeeze. The meal was superb, but both Kath and l were slightly disappointed to hear that Eva would be leaving the following day as her mother had been taken ill in Poland and Eva would be going back for a few days to care for her. When we returned to the house, both girls sat on the sofa with Phil and in chairs facing them, Phil told Kath how much he liked her dress, especially the way it showed off her tits. With that Kath shrugged herself forward, and with a shimmy, both tits worked loose, tumbling out of her dress. Eva said she thought Kath's tits were beautiful and asked if she could kiss them to which Kath replied "Only if l can taste that sweet cunt of yours". Well both girls were naked in seconds and put on a wonderful show as Phil and l sat back with a glass of wine and a cigar watching them going at each other in every conceivable position. At one point Phil went to a cupboard and came back with a selection of dildos and vibrators which the girls were quick to put to good use. At one point they were lying head to toe, each with a dildo up their arsehole and a vibrator in their cunt, working each other into a frenzy. They kissed and sucked each other, tonguing each other's cunt and bum hole, they looked so good together. Finally Eva took a long, double ended dildo, sticking a good ten inches up her cunt before sliding the remaining ten inches into Kath's cunt,they then proceeded to fuck each other wildly as if each was trying to fuck the other into submission. Eva caught Kath's bouncing tits and bit down hard on her nipples as Kath took hold of Eva's nipples and twisted them. Each was urging the other on, demanding to be fucked harder, by this time both Phil and l had our cocks out and were stroking our erections. The girls were fast approaching their climax and as the first tell tale signs were evident, Phil and l made our way over, he chose Kath, giving me Eva and we buried our cocks in their mouths and emptied our balls just as they both came. Eva sucked me hard, eager to take every last drop, as Kath was doing to Phil. Afterwards we just all lay together for a while until Kath announced that she was tired and would Phil mind if she slept with me. Phil smiled and said that was fine as he needed to give Eva a good fucking before she went away. I admit that l was also feeling tired and after showering together, Kath and l just curled up together, feeling a lot of love for each other as we drifted to sleep. Phil and Eva left early next morning as he was taking her to the airport, Kath and l had a lazy morning, Phil returning about lunch time to take us into Bruges for some sightseeing. It is a beautiful city, Phil told us it is known as the Venice of the north and l can quite believe it. In the evening we sat at a bar as Phil told us that he had grown tired of the life in the city and that he had been offered a chain of bars in Belgium so he had sold up in Amsterdam and moved out. He said it had been a good decision as his new bars were much more profitable. He told us he had met Eva when she worked in the local supermarket, he was advertising for a housekeeper and she had asked for the job. He told us she had had a tough life, "Her father took her virginity on her thirteenth birthday" he said, "Her mother told her that it was time for her to please her father and held her down on the table guiding her husband's cock into Eva's virgin cunt" For the next three years her father had used her for all manner of sex, also allowing his brother to use her as well, often both together. We were surprised that she felt the need to go home but he told us that her mother had often been beaten by her husband and had been ordered to do what she did. Eva's father had died a few years back and now her mother had no-one else. After leaving home, Eva had ended up in Berlin where she had taken a job as a dancer, but that turned out to be more a case of being fucked on stage to music. She had run away after a year and travelled around from job to job until she had ended up in Bruges. " l didn't bring her here for sex" he said, "In fact it was her that made the first move, after all, she was twenty-two and l was sixty five. But l wasn't going to turn down the chance and we're very happy together" We made our way back to the house where we told him what we had been up to, Kath told him about her dogging experiences, good and bad, which was obviously having an effect on him, so l suggested he take her to bed and l would sleep alone for the night. Saturday was again spent sightseeing, arriving back at the house about seven. Again the conversation turned to the many ways that Kath was getting fucked when she told him about our trip to Yorkshire and meeting Rob. She described the size of his cock and how she had tried to get him to fuck her in her arse but that he was so gentle he hadn't wanted to tear her. "We're going back in September" she said, " Next time l'll make sure l've been stretched beforehand as l really want him in my bum" We also told Phil that we were getting back into the BDSM scene but that judging by some of the videos we had seen on the internet, what we were doing to each other was very tame so we were looking to step it up. Phil excused himself to make a phone call, returning to say he had set up a meeting with someone for Sunday that could give us some information. That night we all slept together, at one point Phil fucked Kath's bum as l fucked her cunt, feeling the contours of his cock separated from mine by that thin cunt wall. Kath also said she wanted to see us sucking each other's cocks, something we have done before, each of us holding each other's cum in our mouths and taking turns to kiss her and transfer it to her mouth. That is the way our relationship is, we are happy to please Kath because she gives us so much pleasure, she has asked us to fuck each other a few times and we are happy to please her. On Sunday Phil drove us toward Brussels to meet his friend Peter, Phil told us Peter had previously been the stage manager at the club but now had a very private business that he operated for exclusive clients. Kath was fascinated but Phil would not enlighten us any more. We arrived and were introduced to Peter, a tall man about six foot, in his fifties with a fit looking body. He was very pleasant and took us into his lounge where we sat and chatted over some wine. He asked us if we wanted Kath to be the sub or was she to be the dominatrix and me the sub. Kath said that she had seen some things on porn sites and wondered if she would be able to withstand that sort of punishment. Peter explained that he had a fully equipped "dungeon" and that he had a number of wealthy clients who came to him regularly to be abused and punished. He said he often filmed the proceedings for the clients personal use. "I used to be involved in the porn business" he said, " But these days the business is controlled by some very nasty characters and most of the girls are forced to take part", he also said that many of the porn sites were now simply covers for viruses to access people's bank accounts. He suggested we make a start and told Kath to strip, complimenting her on her tits saying they were ideal for what he had in mind. He then told us the importance of a safe word should Kath find herself unable to carry on, we told him we already had a safe word but that Kath had never used it. He then told her to open her legs as he inserted two fingers into her cunt, then told her to bend over as her inserted those fingers into her arsehole. It was quite a matter of fact and degrading examination but l could tell that Kath was already enjoying the experience, she loves it when someone treats her as a piece of fuck meat. Peter then showed us through to the dungeon where Kath's hands were handcuffed and connected to a rope above her head, pulling her up so that she was balanced on her toes. This had the effect of arching her back so that her tits were thrust out. He then called me over, telling me he would show me how to tie up her tits. He told me that l should use the silk rope that he would give me as it did not chafe the flesh of her tits. He then proceeded to bind the base of each tit tightly, winding the rope around her tits in turn, squeezing them tight until they stood out in front of her like balloons with greatly engorged nipples. He said her tits were now extra sensitive, suddenly taking a horse whip from a rack on the wall and giving each tit a sharp slap. Kath gave a cry but said nothing as Peter repeated the whipping, paying attention to her nipples. I could see tears forming in Kath's eyes and l asked her if she was ok, her reply as to tell me she loved me as Peter struck her again, leaving bright wheals on her tits which were now changing colour as the blood supply was restricted. Peter then lowered her hands slightly but then forced her legs apart, tying her ankles to loops in the floor, she was then hoisted again He then fetched two small clamps which he applied to each nipple, they were very strong, crushing her nipples flat. He then began adding weights to each clamp which produced another whimper. Peter then moved a large contraption between her spread legs, making some adjustments and adding some parts until l recognised it as a fucking machine. He had attached two dildos to the machine, both of which had a thick coating of lubricating jelly. The bigger one was adjusted so that the first two inches were inside her cunt, the smaller one was position just inside her arse. The machine was then switched on, rotating slowly at first sending each dildo into their allotted cavity. I could see Kath adjusting her position as those dildos went up inside her, initially only about six inches went in then out, the length of each stroke gradually increasing until she was taking at least ten inches up her cunt and eight inches up her arsehole. The speed was then increased and she gave a moan as those dildos began to pound into her body. Peter then gave me a powerful vibrator, telling me to put it onto her clit while he took a large cane and began beating her buttocks and thighs. Peter told me to pull on the nipple clamps, l could see the look of fire in Kath's eyes and l knew she was nearing her limit but still the machine fucked her harder, Peter struck her harder and l twisted her tortured nipples, her belly convulsing as the vibrator mutilated her clit. I was on the point of stopping it myself, thinking she had forgotten the safe word or was just unable to speak, then suddenly she stared at me with wide eyes and screamed "l love you" as a huge orgasm surged through her body. She was convulsing from head to toe, juices pouring from her cunt as Peter slowed the machine, finally removing it, then releasing her nipples and tits which caused more pain, then untying her allowing her to collapse into my arms. I carried her through to the lounge and lay her on the sofa, she was still shaking as the latter stages of her orgasm were still rippling through her. Peter said that he was impressed with the level she had reached, l said she must have been at the limit but he assured me that some of his clients went much further than that Gradually Kath recovered enough to call Peter over so she could kiss him and thank him, she asked if he would do it again for her in the future when we again visited Phil. He said he would be happy to oblige and that as we were friends of Phil he would not charge us. Kath said that perhaps he could fuck her next time as payment, he laughed and said that if she came back she would most definitely be getting fucked. Once Kath had recovered, Peter gave me a box of toys and equipment that l could use on Kath in the future, she kissed him again and we left, stopping for a meal on the way home. Once back at the house, Kath said she just wanted to shower and sleep so we left her alone, me sleeping in another room. Having got home on Monday evening l did think it would be a while before Kath would feel up to any more wild outings, how wrong could l be, it was only 24 hours later that she was asking me to take her out dogging again, but that story is for another time. Kath is reading this as l am writing it, she wants to thank those who have given her lovely comments so please keep them coming. She is also confident that there must be more people out there who recognise her as the slut they fucked, so if there are please let us know.