It is one of those avoidable things a husband would wind up hearing and have to deal with. But you know what, so would we white wives. I know that when I told my black lover that I loved him, I was grateful my husband couldn't hear it, because I felt so guilty. It would become a conflict for me that lasted for months, until my lover and I had to separate because he moved away to go to college.
I firmly believe that women are capably of loving multiple people, in different ways, but there is no denying the love that can develop from the way a man can make a woman feel in bed. Or on the couch. Or on the floor. Or in a public park. You get the idea. But we never want to hurt the others we love, either.
I love my husband, and he is amazing, but there was a moment in my life when I seriously considered leaving him for a younger man, simply because of how his black cock made me feel, repeatedly. If my husband was a better lover, then I would not have this angst in my life. But he isn't black, and that is the difference.