Fiteen months ago my wife and I moved into our new home. During that time we have got to know our neighbours reasonably well and one in particular, Jane, who has just recently got divorced and is a single mother. My wife Grace, took pity on Jane who seemed to be struggling on her own and rarely had much of a social life. Jane was about 30, where as my wife is 49, but despite the age gap they got on very well. On the odd occasion I would babysit for Jane when Grace would take Jane out for a drink. I would also do the odd job to help Jane around the house as she was obbviously strapped for cash. One weekend when her son was being looked after by her parents Jane asked Grace if she would be interested going out on a Saturday evening. Grace asked me if i minded which i did not and off they went. Insted of the normal casual wear that Grace normally wore she made more effort this time as she also planned to treat Jane to a meal before the drink. Without going overboard but still looking very smart my wife wore a lovely knee length dress, stockings and heels. I kissed my wife goodbye and said see her about 11.30pm. About midnight I heard a taxi draw up outside Jane\'s house and out got her and Grace. From what I could see Grace looked a little unsure on her feet. However I did not give it any further thought until 2 minutes later I saw a car park outside the front of our house and out got 3 guys. Unsure where they went i just sat back in my chair. 30 minutes later and still no sign of my wife I decided to take a walk to Jane\'s house. Arriving at the front door to find it open. Maybe a little worse for wear and not closed the door I thought. As i entered and walked into the living room Jane was slumped in the settee fast asleep. I heard a noise from above and presumed Grace was preparing the bed for her. To the shock of my life as i got to the landing I could see the reflection from the mirror wardrobe and my wife kissing a young man in his 20\'s. I stood there totally gobsmacked but at the same time anger was over ridden by waves of excitement and my cock slowly became aroused. They stopped and then I heard another voice say \'one more go\' and despite a little resistance from Grace she agreed but said she must go and they should leave too. The other young guy took his friends place and with his arms around my wife\'s waist began to kiss her. Whilst pushing his groin against her and groping her bum cheeks I clearly heard a murmer of satisfaction coming from Grace. They too heard this and a couple of voices spoke out offering words of encouragement to their mate to get stuck in. The third guy then stood up behind Grace and with Grace sndwiched between them he proceeded to rub his hands up the her bum and down her legs. Her dressed was quickly raised up to her waist where her stockings and suspenders became visible to the gasps of the guys. \'The dirty mare\' one said and the other shouted \' lets give her one\' Despite mild mutterings from my wife to stop her objections were tame and gasps of satisfaction was coming from her mouth. Clearly visible from the landing from the reflection in the mirror my wife was laid on the bed and one of the guys quickly removed her panties, whilst the other guy removed his trousers and immediately dived between her legs with his mouth and licked her pussy. The other chap eagerly sucked her breast which had been removed from her bra. Then the third guy having told his friend to move replaced him between her legs and he guided his cock into her. Within seconds he had obviously shot his load into her and was then replaced by the other guy. Comments were being made all the time and they all took it in turns to fuck my wife. Grace was then turned onto all fours where a cock was harshly put into her mouth whist another cock was forced into her rear. Again they all swapped places whilst calling her names such as \'whore\' \'tart\' and whilst on all fours her bum was slapped repeatedly. One of the guys not resisting one last moment of pleasure began to wank himself off in front of Grace\'s face and covered her in spunk. With that I heard the guy shout lets go now. I quickly darted into the other bedroom as they got dressed and left the house. I was not sure what to do but then I heard my wife get up and go into he bathroom, with this I took the opportunity to go downstairs and return to my home. 20 minutes later my wife returned. She did not say much but went into the bathroom to have a shower. In the morning I asked her if she had a good time to which she replied it was okay, but possibly she had to much to drink. Since then apart from the odd cup of tea or coffee with Jane my wife has never gone back out with her saying that Jane needs to make friends of her own age. Also despite being tempted to say to my wife what I saw that night I have kept quiet as I am not sure as to her reaction if told her how enjoyable it was for me to witness such a thing.