My Queen and I have often discussed the fantasy of her having a live in boyfriend, and I would move to the spare bedroom.
We have an atypical cuckold relationship to say the least. I thought I was an alpha when I first met her 10 years ago and our sex was hot. Since then her libido has skyrocketed past mine (an unusual side affect of menopause for her) and her latent interest in black men has blossomed. I have become her fat-cocked boi, and we have pushed limits. We both have the best sex of our lives, and it doesn't usually include a Bull (anymore).
Although she gets off on controlling me, she still wants a more masculine lover, better endowed and more muscular. And she wants to take the dominance imbalance further by introducing a more full-time Bull. Of course I'm not too fond of the chastity cage she is talking about having made.
@ BetaFury - I have realized your fantasy with my Queen. There is a Bull on this site (we met on another site) who is porn star kind of guy that we used to entertain on occasion. He is smart and confident, 6'2" (or more?), in gym shape and truly hung like a pony. She loves how she feels small around him. My Queen would tell me to rim him as he took her missionary because it would drive him crazy and he would fuck her harder. The submissive feelings when doing this were overwhelming as I fought his muscular glutes to keep my tongue in contact with his asshole. It was almost bruising.
More exquisite is that she enjoys me 'reclaiming her' after he left. His cock is incredibly thick and quite long, and he fucks her for close to an hour. She is quite wet from her own juices, his cum, and the lube, and she invariably laughs when I enter her, usually commenting how she can't really feel me. This usually triggers me within seconds - especially since I have been jerking the entire time watching them.