As someone that has watched my wife with black lovers, I can tell you it is an intense experience. What I saw, heard and smelled wasn't what I thought it would be. I was also surprised at my feelings. It was very erotic to see my sweet Amie being ravished by black men but it also brought out jealous feelings in me as well a sense of shame. I also felt a sense of pride and empowerment sharing her. She is very lovely and count myself lucky to have Amie as my wife and men come onto her constantly.
When she is having sex with them I hold back cumming no matter how much I want to so I can save my load for when they are done with her. She almost always take them bareback and they almost always ejaculate inside her so when they are done I have the overwhelming urge to make love to my wife. Letting the excitement build just makes the act of sex with her used body so much more intense. I feel like I have to reclaim what is supposed to be exclusively mine and after I mount her I usually orgasm very quickly and fill her with more than the usual amount. The idea of my semen swimming around inside her, competing with the seed of one or more black men is an intense turn on for me.
You have to remember that if you share your wife with another man you are surrendering your alpha male status to them, even if only temporarily. It can give you a strange feeling especially if they are more well endowed than you and she is enjoying herself very much because they are great lovers. Sometimes you will be surprised at what she will allow them to do to her. Be ready for the unexpected.