For many years I've had a no strings on/off sex with the ex situation. We are both now in our early fifties and parted many years ago though always managed to keep the casual side of things going. She is still very pretty and horny as hell when fired up. She has a good full figure with DD tits and a brilliant shaved pussy with a huge well used crack and swollen labia. Her bum is gorgeous with a great wee wobble to it. We are both in very long term relationships but have always managed a shag at least a couple of times a year, be it for passion or payback when we feel done over at home etc. Recently her partner was asked to price a contract in Northern Ireland and as it is an 80 mile drive to the ferry port she asked if I would drive him in his car and I would be paid £50 for the trip. Obviously I cut a deal that included extra's. IE a good feel and a quickie. The trip happened last Thursday and her man had booked the last sailing from Scotland that night. I picked them up as planned and we waved away the ferry and made our way back to the car for the 80 mile trip home. It was beginning to get dark and as many miles are a remote coastal route I obviously suggested she remove her jeans and cover herself with a traveling rug when we passed through the small towns. It was a great grope-fest all the way home and she squirted a few times along the way. My ex likes a wee bit of showing off as long as it's safe, and just after leaving the port we saw a lorry parked in a big sweeping lay-by with the driver standing next to his cab having a smoke. It was just beginning to get dark and there was nothing else on the road at the time. My ex spotted him from some way off and said "will I give him a flash?" Obviously I said yes but did think she'd nerve out at the last. The driver looked in his early fifties much the same age as us. I wasn't sure of how she intended to do it but she said "just drive by slow". As luck would have it, as we approached he gave a wave and oblivious to our intentions walked to the other side of his cab out of sight. In an inspired moment of bravery I pulled in and stopped just as she covered herself with the rug. "Why have you stopped?" she asked, looking nervously at me. "I'm going to suss him out" I said boldly. I walked round the back of his cab and noticed he was having a pee against the wheel. He didn't try to hide it and happily stood there shaking it as we spoke. "Alright mate" was all he said. "You'll think I'm kidding mate but my girlfriend wants to show you her cunt" I said. "Aye really?, magic" was his shocked but delighted response. "Wait here at this side of the lorry away from the road" I said to him. I went to the other side of the lorry and saw the anxiety written on her face as I got in the driving seat. She thought I was kidding when I said "sorted, he wants to see your cunt" She knew otherwise though when I drove to the other side of the lorry as she sat in stunned silence and half panicked as she held the rug close covering herself up as we approached him. "You're for real eh?" she said with a quiver in her voice as I pulled up beside him. It was a bit bizarre as I got out and walked to her side of the car with him next to me and opened her door. She still didn't say anything and although still covered had let go of the rug. I said "there you go mate, as promised" as I took the rug from her. I was the only one talking but they both now seemed to come to life as her cheeky grin appeared as she put the seat back and opened her legs wide. At that he took his cock out and started wanking it with a smile all over his face. Still nothing had been said until he stood closer and she said "your hands are to oily for you to finger me, but come here" I jumped in the drivers seat and started fingering her big shaved swollen cunt with three fingers as she half turned and started sucking his cock. I'd love to say it was huge and he lasted ages but the truth is, it was average and he spunked in her mouth after four or five nods of her head. She kept wanking him for a good five minutes after but it just got softer. She kept squirting as I fingered her and lifted her top and said to him to squeeze her tits. She loves her tits being played with and he bent down and sucked them for a moment. It seemed to be all over in about ten minutes and was kind of fizzling out with us all looking very awkward. I asked him for his phone and took a cracking close up photo for him of her swollen wet pussy. I got her to turn with her legs out of the car and hold it open for him as he stood in awe. She rolled her eyes at me and I took the hint. "kiss her cunt big man" I said. He got to his knees in a shot and started nibbling on her clit and pushing his tongue in her hole as she lay back across my lap. He obviously hadn't had a squirter before and recoiled as the first flood of cum hit his face but quickly got the hang of it. A car pulled in the other side of the lorry and we all quickly sorted ourselves and drove of giggling. I shagged her in a lay-by further down the road and she said she was disappointed I hadn't asked him to fuck her. We were both looking at each other to take the lead but had allowed the chance to slip past. I shagged her again that night and three times in the next two days until her man came home. This is 100% true but no names mentioned.