Yes, Back in our 20's my best friend who moved a state over when we were in middle school moved back to town. We started hanging out again and at the time my wife and I were discussing us having a 3 way with another woman. She would counter back any time we talked about it with starting with another guy instead of another woman. At first I was like nah but she said if we did that then she would find another woman for us to share. Anyway, I knew she thought my friend was good looking and suggested him. She agreed and we told him our thoughts and he was into it. we both took her to a hotel that night and fucked her brains out. After that, she would call me at work and tell me she was going to leave work early and go over to his apartment and "hang out' before I would get home. I knew she was fucking him though she would never admit to it. The jealousy drove me mad! This continued on and off for a few years. The last time was after a new years party where I was asleep in the bedroom, my brother in the guest room and my friend in the living room. My wife snuck out of our bed once I was asleep and fucked him without me knowing. My friend moved away shortly after that and told me about it years later. I asked my wife about it but she said they just made out. Total bullshit. I wasn't mad about it. I even suggested that she drive over to where he moved and stay the weekend. She would never do it but I loved the thought of it.
Years later I met a black guy through coaching and we became friends. I told him that one of my other friends wives had a black bull. He laughed and said he knew all about it and when he was in college him and a group of his friends were bulls at many parties with white couples. I acted like I was surprised by it and admitted that it was pretty hot! He told me many stories about it and I told him that I thought my wife needed a bull! I asked him to text her and he did but she never responded and it all fell apart. About a year later I told her all the things that he said he wanted to do to her. Bought a black dildo that he recommended and used it on her and watched her suck it. That is as far as it got. She was shocked that I would let him talk about her that way. I just told her it was hot as fuck. I'll probably never get her to take on a bull but I have not fucked her in years due to ED and my small cock. When I finger her to get her off I always tell her that I have dreams about her getting stretched by a black cock but she just blows it off. Her menopause has caused her sex drive to fall off bigtime. I guess I'll just have to fantasize now.