This is a true story that happened to my girlfriend (K) and I, in Spain last year. We are not hardened swingers but have enjoyed the company of others every now and again. We have had some really fun times but only when it has happened spontaneously as K doesn't like the idea of pre-arranged meets. We were lying on the beach one day with K in her bikini dozing while I lay on my side facing her. Having rubbed sun cream into her gorgeous body, I continued to lightly stroke her, which she seemed to be enjoying. She is not really an exhibitionist but I took a chance and slipped my hand under her bikini top and started playing with her nippple. It soon started to harden and she let out a little involentary moan of contentment and at the same time parted her legs very slightly. This made my cock start to swell and I knew I had the green light to carry on but wasn't sure how far she wanted to go. After a minute or two, I ran my fingers down to begin stroking her thigh, moving to the inside and then round to the edge of her bikini. I could feel the warmth of her pussy and the change in her breathing told me that she was really enjoying this, which had now made my cock swell to its max. I looked past her, down the beach and noticed that a guy had laid down about twenty metres away from us. He had obviosly noticed what was going on as he was on his side facing us pretending to read a book. He was probably about 30, good looking, tall with dark skin and a well toned body, the sort of guy that you would want to be and the type that I knew K would fancy and flirt with after a few drinks. Well, I decided this was an oportunity to have some more fun, so I ran my finger nails lightly over K's pussy mound, to which she let out a lttle groan, so I started playing with her clit and slit through her bikini. She responded by arching her back and letting out little shudders, oblivious to the fact that we were being watched. I looked across at our beach neighbour, who made eye contact and smiled and then he started playing with his cock through his swim shorts. Getting even more turned on by this scenario, I really went to work on K's pussy and my cock was now straining in my shorts. I said to K ' I hope you don't mind but we are being watched' She asked me who by so I decscribed the guy. She didn't open her eyes to look at that point but just said 'Don't you dare stop, I am so wet' With her body grinding against me furious fingers she looked across to our friend who was now wanking his cock still through his shorts. She gave him a knowing smile and he instantly smiled back. He took this as an 'ok' to move to the next stage, which wasn't what we had intended at all and he got up, came over and laid down next to K and started to play with her tits which he freed from her top. The next thing is that she turned to him and started kissing him, obviously totally aroused as I was too by now. I was now in a 'spoons' postion behind her and really went to work on her pussy slipping my hand inside her bikini, to find her pussy the wettest I had ever known. With that she grabbed our friend's cock pulling it out of his shorts and started wanking it furiously while still kissing him. This was too much for me so I pulled he bikini to one side and pushed my cock into her pussy from behind. She responded to my thrusts and was rapidly approaching an orgasm, as was our new friend. With all of us groaning in extacsy, I could tell that we were all about to cum and with that K pulled our friend's cock towards her tits, just as he spurted his cum, which landed on her tits, neck and chin, just as she shuddered to one of the most intense orgasms I have ever known her have. That sent me over the edge and I came too, filling her pussy with my cum with what seemed to be for ages. We all lay there for a moment, completely exhausted and then our friend put his cock back in his shorts, lent over and kissed K and said 'Thank you' before returning to his spot. Laying down he picked up his book and continued reading as if nothing had happened leaving us to continue our afternoon at the beach. The only thing that had been said during our encounter had been his words of thanks, we hadn't even asked his name. When he left the beach about an hour later he walked passed us, smiled and said 'Goodbye' before disappearing, leaving us very contented with our time on the beach and leading to some fantastic and intense sex for the rests of our holiday. We are off to Albufeira at the end of April, hopefully to have another beach experience. If you will be there, get in touch, you never know ....!