I agree with Robbiann, make it special. Love her, hold her hand or feet during copulation. Candles, flowers, etc. Thank him for doing this special thing for your family.
You're right! Its not a kink for us. Its a lifestyle and my wife is only attracted to black men, but wants a cuckold for a life partner and responsible father.
It's tough to lick balls during the in and out. When he pauses, suck a testicle down or suck up and down his vas def getting it to pump. It feels good to him. I like to eat his taint and ass during a pause too.