Wife gives footjob to stranger as I wank

I have a huge foot fetish and am blessed to have a wife with beautiful and sexy feet. Our foreplay always includes a lot of foot licking and sucking ( by me of course). Sometimes a footjob by her is enough to give me complete satisfaction. When we go outdoors, I ask her to always paint her toes and wear sandals (my favorite color, both in paint and sandals, is red). When I say men staring at her feet and looking at me with envy, it gives great pleasure. It was one of those days when we were out shopping. A man in the store was constantly looking at her feet. He came to me and we started chatting. After some pleasantries, he got to the point. "Your wife has got lovely feet", he said. "I know", I said. I could see that the guy has a huge foot fetish and I could also see slight bulge in his pants. After a small pause, he said, "I could pay you to have a footjob by her, if you don't mind." He was perhaps expecting me to react strongly, but he did not know that inside I was brimming with pleasure. "Ok, I'll talk to my wife about it and let you know." We exchanges our phone numbers and he left.
That night, when I was licking her feet and rubbing my dick against them, I told her about the guy. To my surprise, she was open to the idea and told me that she also wanted her feet to fuck a different dick.
The next day, I called the guy and told him that he could come to have his wish fulfilled. I also told him that I will not charge him anything but my reward will be watching him fuck my wife's sexy feet. I could feel that the guy was extremely delighted.
That night the guy came to our house. I could see that my wife had taken extra effort to paint her toes. She had also had pedicure done to her feet that day. She also wore anklets and toerings which made her feet look even more beautiful. The guy took out his dick and I could see it was bigger than mine. My wife will have good time fucking this dick, I thought to myself. I also took out my dick and started wanking. The guy looked at her feet with admiration and said he had fucked countless feet in his life but her feet were amongst the prettiest. I could see that because his dick had really grown big with excitement. The guy started off with some vigorous licking and sucking of the feet. He was really enjoying it as he was moaning with pleasure. We were both stroking our dicks as he was doing it. When he was done with the licking, he got the feet between his dick and started stroking it. He started slowly and then increased the rythm. My wife was now enjoying it. He now left it to my wife who had become very experienced in it giving me a foot job every other day. She very deftly changed her feet angles to give him different fucking angles. Sometimes, she took his dick between her toes and rubbed it (it was a bit difficult to do because of its big girth). Then he made my wife lie upside down and asked to give him reverse footjob. She did it very skillfully. I was really enjoying it watching as I was stroking my dick. I had slowed down my wanking so that I could cum on my wife's feet at the same time as him.
The guy kissed her feet and then started fucking them vigorously. It was clear that he was close to orgasm. Then he came at her feet and at the same time I also shot my load at her feet. I was surprised to see that my load was bigger than normal. Her feet were now dripping with the load of both of us. My wife lay there watching her feet. I took the opportunity and started sucking them, thus also licking off the cum. The guy licked off the other foot. He then said that it was the most enjoyable footjob he had had. As he left, I proceeded to give a good fuck to my wife;s pussy which was drenching wet after this experience.