This happened about seven years ago. It was our son's eighteen birthday, late August and we had a small party at our house and garden. Our son was going off on holiday the next day with his girlfriend so they were leaving about 10.30. Anyway, about twenty people turned up including Josh who was one of our son's best friends, he was a year older studying sports science at the local university. Our son was going to a university some distance away. Josh was a very good looking, athletic black guy who had fancied Emma, my wife, since forever. This night he was definitely making a play for her. She was dressed in a short summer dress, low cut, no underwear and high heels. She fancied Josh she told me often. Emma and I have an open marriage and I love her getting fucked and watching joining in or just watching a video or hearing about it. Emma is bi so we have had a lot of fun over the years. She was 40 at the time, 38d2435, the same as now, and sexy tanned legs. The party was going well, except one couple had split up and the guy left leaving his ex girlfriend; so I was trying to calm her down. I went to get a drink and on my way back I heard Josh talking to his mate, saying get Shaz, the girl, to get Steve, me, to take her home when our son and his girlfriend had left for the airport. As he intended to fuck Emma that night I went back to Shaz and gave her a drink, her friend came over and I left them to it. I wondered back into the kitchen and saw Josh standing behind Emma, very close and he was clearly groping her tits, and kissing her neck and she was responding. I left them and went to the garden. I saw Emma a few minutes later and said you were enjoying yourself with Josh and she said oh yes and he is a very big boy, and i said let him fuck you tonight when I take Shaz home. Our son and girlfriend left just after 10.30, and the others started to leave just after, I offered Shaz a lift and she accepted. When I left to take her home there were four people left including Josh. The other two were preparing to go. As I drove Shaz home I could not help but get hard, looking at this sexy leggy 19 year old in a very revealing dress next to me and thinking about what Josh was doing with Emma. Shaz and I chatted and she told me her ex boyfriend was jealous because he thought she was fucking the 45 year old owner of the company she worked for, and I said are you and she said yes. She said you know that Josh will be fucking your wife and I said yes I know we have an open relationship. She said wow!! I would love that. I put my hand on her leg and said your boss is a lucky guy. As we got near her house she asked me to stop and we had a grope and a kiss, I then dropped her off and she promised more soon. When I got home everywhere downstairs was empty, and I could hear very loud groans and noises coming from upstairs Emma is a very noisy fuck. AS I walked into the bedroom both her and Josh were naked and he was fucking her missionary on our bed, hammering into her like a man possessed, calling her a tight slut and whore, and how he was destroying her cunt. She was saying I love your cock be rougher, be rougher make me your bitch. He had her on all fours and proceeded to fuck her doggy, seeing me he said your wife is a slut for black cock, and I said I know. I went to the front of Emma and she sucked my cock, I am 9" and Josh was significantly bigger. He yelled and shot his cum inside her, pulling her hair to get her on her back he told her to clean his cock, and by the time he had done that he was hard again and she rode him and he hit her tits and pinched her nipples, calling her whore, white fuck trash, then he pushed her off, her legs over his shoulders and greased up her arse and slowly entered, it took a while but got balls deep, Emma loves anal. Josh hammered into her pulling her hair and rubbing her clit. She had one of the loudest and biggest orgasms ever. He came inside her, this went on for ages, after three hours I left them too it and went to bed in a spared room. About 11 am I woke and went downstairs I could her they were fucking again, and I took some coffee into them and watched them fuck again. I went downstairs and they joined me about 1pm, Emma dressed in a short mini dress, and Josh said lets go to the pub, so we walked to the pub about five minutes away, Josh had his arm round Emma, his hand groping her arse. Once at the pub we sat in the garden had three drinks each and Josh was all over Emma, making it clear she was his slut. He stayed that night and left about lunchtime the next day. He came round four or five times a week. Then told us he was losing his room as his parents were moving away for work; Emma said he could stay in one of our spare rooms, he agreed. Two weeks later he moved in, when our son went to university and would fuck Emma most days, over time she also was fucked by five of his mates, all black, and he stayed with us for four years. He would take her to BBC parties where there would be three or four white sluts and groups of black guys and she would be used. She adored him and did what ever he wanted to her. I did get to fuck Shaz a few times, she was a slut too. Emma still sees Josh on occasions, and he and his mates stretch her