Wife fucks my workmate

I work at a car repair place and one of the blokes there, Gary was on his own as his wife had to go to Ireland to see her father who was ill in hospital. I told Helen, my wife, he was in his late twenties (we're late fifties), a well behaved bloke, tall, good looking, and not the type to go out on the beer, so Helen agreed it would be a good idea to invite him round, better if it was Sunday lunch. When she'd put the roast in the oven, made an apple pie, she went upstairs to change, down an hour later looking like a million dollars, she has a slim figure so looked really great in her purple suede skirt, black lace top stockings, a low cut white t-shirt that revealed her lovely 38 bosoms in a lilac coloured lace bra. The lunch was very successful, excellent food, a lot more wine then Helen and I would normally drink but Helen and Gary were getting on very well, I didn't feel out of it, I worked with Gary every day so better he chatted to Helen than me. When Helen got up to clear the table, Gary jumped up to help, collecting dirty dishes, following Helen to the kitchen. A few seconds later I heard Helen's voice, "hey you naughty boy, what are you doing...what would my husband say?" Gary sounded chirpy and confident, I got up and peeked through the serving hatch, he was behind Helen, his hands around her waist, his hands playing with her bosom, "George won't mind, he's always talking about you at work, says you're a very sexy lady..." "Does he? Well, we'll have to wait and see if he's right, won't we? Now, do something useful and make some coffee!" We all moved to the conservatory, Helen and Gary sitting on the sofa, me opposite on the armchair and as she began to pour coffee, I could see Gary staring at Helen's erect nipples, maybe it was a little chilly in the conservatory, or maybe Gary's groping had aroused her, maybe she fancied Gary, her skirt had ridden up and she said nothing as Gary played with her stocking tops, I began to get a hard on visualising her and Gary together, me blurting out as a joke, "well, you've got two hunky guys, how can we service you?" I expected a dirty look from Helen but instead she smiled, put a finger to her cheek and said, "well, what have you got in mind for me?" "For starters, what about this?" said Gary, unzipping his trousers. I expected Helen to show a big sign of phoney disgust but instead sat mesmerised as Gary brought his member out into the fresh air. It looked big, Helen starting to wank him, probably to cool his ardour but when she watched his cock grow and grow until it was a good 10 inches she changed her mind, "I wanted some of it," she confessed later, taking the head of Gary's cock in her mouth. He laid back, closed his eyes as Helen sucked on the big purple head, I got my cock out and stroked it up to full hardness, a regular 6 inches for me. Then she got up, unclipped her skirt, pulled off her knickers, then her t-shirt and bra, "I got to get serious Gary," she said, Gary's eyes lighting up. She guided his cock and slid her pussy down on it, letting out a gasp as his 10 inches went all the way up to her womb. She rode up and down on his cock, slowly at first then faster, the two of them moaning away in ecstasy, Gary repeating "fuck me" fuck me!" over and over massaging her great hanging breasts, Helen gasping away with "oh yes, lover, oh yes". I went behind her, stroked her stocking tops, then squeezed her breasts, fingers on her erect massive nipples, moving around after a minute or so, my cock going into her mouth. It was another few minutes and I shot my load into her mouth, Gary took another few more minutes and I watched him go rigid, yell out, hips shake four or five times as he spurted his spunk inside Helen, she fell forward to kiss him, I sat down, Helen got off, Gary's spunk now running down her legs, she went off to the bathroom, "that was great, best fuck I've had in ages!" When she came back Helen had put a robe on, fixed her hair and make up, she wrapped her arms round Gary's shoulders, "that was fantastic, I really was very scared about it, not sure what it'd be like, or if you'd be disappointed..." Gary put his hand up to stroke her face, "that was great babe, you were fantastic.." I piped up, "why don't you both go again?" Before I'd finished Gary had her robe open, fingering her pussy, Helen put her mouth round his cock, still big from fucking her only five minutes or so earlier. Gary finally left about midnight after fucking Helen's pussy, mouth and arse through the evening, she crashing out exhausted around 11.