My wife and I have a storage unit in a building looked after by a pleasant young black man. We go there a lot but he always seemed to show up and find an excuse to chat. My wife is very friendly and would always be polite and say hello to him.

She seemed surprised when I told her that I thought he fancied her, and said that she didn’t think that was the case and that he was just being pleasant and talking to the customers. After two more visits my wife told me that she thought I was right, that he did fancy her, and that she thought it sweet that a young man could be interested in a chubby middle aged housewife (she actually has a very curvy figure but it isn’t chubby at all).

I told her she should flirt a bit with him next time and watch him get hot and bothered. She did this and afterwards we joked about how he was fantasizing about her for the rest of the day. This carried on and off for the next few visits.

When we were leaving at the last visit after she had been flirting and using some double entendre, I asked her if she had noticed he had a hard-on. She hadn’t so I told her she should go back into the unit and see. She said no but I bet her $50 she dare not go back in alone. She immediately said she would, so I told her that the bet was that she had to leave her bra and panties in the car and go back in just wearing her dress.

She told me no way would she do that, but I could tell she was excited about it. I said she should do it to get him really hot and bothered and then leave the young black guy with a boner for the rest of the day. She giggled and took off her bra. I could see her nipples had got really hard through the thin dress as she got out of the car and went back into the unit.

After she had been in there for ten minutes I decided to go in and see what was going on. I opened the door quietly and went inside, but as I started to get near to the unit I could hear my wife panting and moaning. I got near enough to see inside the unit. She was bent over a pile of packing boxes with her dress hiked up over her ass and the black guy had his overalls around his ankles and was fucking her from behind.

I could tell that she was really into it. Every time he thrust forward she was moaning as if being gutted or something. I couldn’t do anything but stare as he kept ramming his tool into her with his ass tensing and the end of the stroke and pausing for a split second. I hadn’t noticed before but the young guy had broad shoulders, strong buttocks and legs, and as he fucked her his whole body seemed to have been built for the sole purpose of thrusting his black cock deep into my wife’s pussy.

I didn’t know how to react so I sneaked back to the car. My wife emerged a few minutes later carrying a box and looking flushed. She got into the car and said that when she went inside that he had already left, so she just picked up a box that she had forgotten to take.

I don’t know what to do now. On the one hand I was really turned on watching this young black guy using my wife’s body for his pleasure and I could also see that she was loving it. I keep hearing her moaning uncontrollably as he drove his penis into her, and thinking that she never sounds like that when I do it. But I know that it is wrong and that I should not have allowed it to happen. I am worried that my wife didn’t tell me what happened because she enjoyed it more than with me, and that she will go to the unit on her own again.