is there anybody to share us his/her experience? how u told ur partner?
It would probably help
you if you more clearly understood the way women think about topics like this. I know my mentioning this might seem redundant to some here, but I would encourage
you and your wife to read the condensed book by John Gray, "Men Are From Mars, Women Are From Venus", as it points out the differences in the way men & women approach problems & situations. Years ago my wife was laying on the beach reading that book and kept laughing and sharing parts of it with me; I got interested and read it myself ... damn if a whole world of questions about women weren't answered for me right there.
Back to your question, has your wife ever had a sexual relationship with another man since you married her? What experience have the two of you had with involving others in your sexual relationship? Cuckolding makes no sense to most married women because they perceive it as a form of "cheating", and women hate cheating men. So married women have a hard time understanding why their men would want them to have sex with other men while they (the men) remain monogomous & loyal to them.
You might consider approaching your desire from a different direction ... consider adding a 3rd person (male) in your sexual relationship-menge a trois-to enhance & elevate
her sexual pleasure to another level. Forget the "black male" thing for a bit, just concentrate on convincing her that having 2 men making love to her could be a great, fulfilling experience for her, and
reassure her that there is no desire for reciprocation. Possibly get a couple lifelike cock toys and fantasy play with her. Most women love men talking trashy talk when they're having sex, which is one reason why black men are more successful in seduction ... they know how to talk the talk.
Also, it might help you if YOU knew her sexual fantasies ... we all have 'em, and satisfying those seems to open up acceptance to satisfying other fantasies as well.
Back to the 3-some thing a second; your wife needs to feel that what you are desiring is for HER pleasure, not just yours. If she senses that your desire is for her sexual fulfillment, she's going to be more likely to consider your desires. The two of you are at a great age group to consider this, by the way, as you don't want your sexual relationship to become boring or routine. I know when my wife & I have had a 3-some, our personal sexual relationship is elevated for weeks, even months afterwards.
Hope this gives you something to think about, and good luck ... Mac