Hi, my name is Robbie and my wife's name is Sandra. I 'm 47 and Sandra is 40, been married for 25 years, This is about what happened to us 12 months ago. We have been friends with Lynda and Derek for over 20 years and had seen both sets of children grow up, we had had, barbeques and dinner parties at each others house, frequently, any way 3 years ago Lynda and Derek moved to a nice secluded detached house about 6 miles away.One day in September 2017, Derek rang and said did we fancy going out for a meal, catch a show and the back to theirs for a few drinks, I asked Sandra and she said was up for it, so said go ahead and book the show, Derek suggested that we book a Saturday night show, so that we could stay over at theirs if need be. A little about ourselves, Sandra or Sandie as she likes to be called is 5'-10", short light brown hair, long shapely legs with a 38C pair of tits and a shaven pussy very . Very stylish and smartly dressed, as she has a very high ranking position in a Multi National Firm, as for me I'm 6'-3", medium build and very athletic and am employed by H.M.G. in a specialist grade. I am of average length 8 .5" and nice thick girth. Our sex life I suppose is normal, once or twice a month, as Sandie spends three days a week traveling Europe. The one thing that I have not said is that I have fancied Lynda for years, but have never tried it on with her, yes, we flirt and pass sexy comments and maybe hold our kisses slightly longer tha normal, but I've never made a pass at her. So, we had a lovely meal, and enjoyed the show and then back to Lynda and Derek's. Both girls looked gorgeous and sexy, Lynda wearing a nice pair of tailored black slacks , which showed off her body superbly and a nice tight fitting white silk shirt / blouse, which only managed to excentuate the out line of her beautiful boobs, bigger than Sandies. Sandie had a multi coloured skirt on that finished just above her knees and a pink silk / chiffon coloured blouse that was rather tight against her boobs, in fact both girls looked extremely fuckable !!!. We sat down on the sofa's in their lounge Sandie next to me and Lynda next to Derek and the wine started to flow. follwed by a few vodka's and Brandies. I excused myself and went to the bathroom, when I came back Sandie was sat next to Derek and Lynda said com e on sit here, next to her. Well as the night wore on and the drinks flowed, we got round to guessing which of the girls had the biggest tits, I said Sandie she's a 38C, Derek said Lynda was a 40B, I drunkenly said go on then show us and looked at Lynda. She put her drink down and stood infront of me and opened her blouse and revealed a gorgeous yellow up lift bra with filligree top holding in, well trying to hold in the most full round par of tits I had ever seen. wow !! was the only thing I could say, not taking my eyes off them. I heard Derek say go on Sandie your turn. I pulled my eyes away from Lynda's magnificent tits to se Sandie wobbly climb to her feet and stand in front of Derek and take off her blouse. Revealing a beautiful pale blue silk bra, which just about managed to contain her tits. I saw Derek gasp and reach up towards them, but Sandie, laughingly backed away. I then said to Sandie bet you've got you thong on, go show us,, and with that she stood directly in front of Derek and lifted the hem of her skirt up to her waist, to expose a matching pale blue thong and tan thigh high hold ups. Next second I heard Lynda say my turn, and she unzipped her trousers and stepped out of them revealing a figure hugging pair of matching matching yellow panties. My cock was so hard it was aching to be free and pressing against my trousers. I just lay back a looked at Lynda and said o.m.g, your beautiful. The spell was broken by a gasp from across the room, and I heard Sandie's voice say, yes, yes, oh god. I looked over and saw that Derek got hold of Sandies cheeks and had buried his face into the crutch of her thong and was licking away at her. The next second before we could say or do anything, he had pulled Sandie down onto the sofa, dropped his trousers and laid her on her back, pushed her legs wide open and was thrusting his cock into her pussy in quick steady thrusts. I heard Sandie, screaming, oH my god, yes, yes, fuck me, faster, faster, deeper, oh fuck me Derek, fill me, that's it, that's it. I was so shocked and Sandie, that I just sat opened mouth, watching them, until Lynda said, Are you you just going to watch or fuck me? I looked back at her and she had stripped down to her bra and panties, in a flash she unclipped her bra and let her gorge tits free and dropped her panties, and lying on the floor spread her legs wide and said, come on Robbie, fuck me, fuck, like Sandie is getting fucked. I slipped my cock up her waiting pussy and in all honesty, it took about thirty seconds to explde up her and fill her to overflowing. As I pulled out of Lynda and we lay gasping on the floor, I looked over to Sandie to see her kneelin on the sofa totally naked with Derek fucking her doggie style, I watched as I heard in shout out oh god I'm coming, I'm coming and Sandie scream fill me derek, fill me, don't pull out. I saw him shudder and, and shudder again as he emtied his balls into her, and filled my wife full. I'll continue with what happened later that night, shortly