Not my wife, but a married woman in her 40s who was my online & phone slave. I trained her and made her incredibly submissive to me.
Before our relationship, the only man she had ever been with was her husband. But he'd had started to have ED issues and wasn't doing much about it, plus he was totally vanilla. Eventually my slave had ended up fucking and sucking a black friend of theirs who she worked with part time on the weekends AT the car racetrack where they both helped out, and then gave in to a young man at her last job, being felt up by him at work and sucking him off a few times at his apartment. Her hubby didn't have a clue.