Update: Husband's exp did not seem to have much impact on his libido. He had been fucking a female coworker for fun, while he was sending me to my black lover. Now, that we had a break from this lifestyle, he is not only very active in bed, but suggesting I may see black men again.
In retrosprective, I don't feel so guilty anymore. I always thought, why should I be the only spouse getting 'impaled by black cock', as someone said, for the enjoyment of the other half?