«The Wifely Control Archive – Book Three» by Rebecca Tarling

Hilary has always been the surrendering one in her marriage to the older Martin. But things are about to change when she starts surfing the net and meets Marcia, a experienced Domme who believes in female superiority. She insists the young wife's handsome older spouse is a prime candidate to become the kind of obedient partner her group of Femdoms are expert in training. Hilary's dominant desires have been awakened! In Marcia's words: "What better way for a husband to be assured he is a second-class citizen in one's relationship than to be sent to his new sleeping quarters early while his wife entertains a lover in the bedroom he had once shared with her?" With that in mind, Hilary gives Martin to Marcia for training. While he's at home surrendering to a formidable Asian bitch he hates, Hilary's out to find a lover. However, her new life does have some interesting twists, when she finds herself, if just temporarily, surrendering to a commanding black man and his magnificent cock.