about ten years or so ago, I had a long term relationship with a friend with benefits: an extremely submissive lady who also enjoyed making her husband submit. Eventually she and I agreed to have me meet them both for a weekend. I sent him directions forcing him to shave the skin off his body and legs, to buy garter belt and stockings and high heels that fit him. (This whole process took about 6 weeks as he was at first too humiliated to buy the high heels that he had to try on. }
I will not go into details but the week end included another friend of mine: a bi female domme. At the bottom of the pile was the sub husband, I sat at the top with the domme at about the same level.
It was extremely exciting and the only bi experience I have ever had. Despite the excitement we never repeated the experience and I never met even the wife alone again. I in retrospect I may have been uncomfortable with the excitement I felt and the husband was very upset at the affection and devotion his wife showed to me. He didn't want her ever to see me again. He did admit to his wife that it was one of the most exciting experiences he had ever had. Both his wife and my domme friend would have been up for doing it again.
Good luck in your search. I understand how your might find this very exciting
Not sure this has ever been addressed here, but my favorite part of any BDSM relationship is the psycho-sexual aspects. I won't delve too far into the meaning, as I feel it is self evident: being sexually and/or psychologically manipulated into doing something you would not otherwise do. In short, being brainwashed by whatever means.
Thus, I am looking for a professional mistress in DC with whom to explore this scenario, with the ultimate goal of being manipulated into engaging in sexual acts with another man, something I would not do on my own and which does not necessarily appeal to me. What does appeal to me is the journey towards the goal, and, I must admit, the feelings of absolute humiliation after the deed is done, but doing it anyway to please my mistress.
Long term process, starting from the first session. I do wonder if I am seeking something a bit more sophisticated than I am likely to find. But, thought I'd throw out what I am looking for and seeing if any of the Mistresses in the DC area will respond. And, perhaps an added bonus - if the sessions were video taped, it would be unlike anything currently available on sites such as Clips4Sale, which offer scenes, not story lines.
And, that's all, that is my proposal.
Or maybe you should move to DC? Though I admit, Miami is probably a much nicer place to live.
If you're ever in town, let me know and we can make it happen 
I definitely will, thank you.
I don't really offer hardcore dom sessions, but I do enjoy pushing boundaries, which is how I got into the dom aspect of the hobby. I used to strictly see GFE guys then I found myself wanting more, deciphering which of my regulars might be open to exploring other options. Before I knew it, 80% of my appointments in Boston were cuck sessions.
Let me know if you'd like to discuss the possibilities.
Whit
I know a girl who is great at this type of thing... If you just google forced bi or cuckold Toronto you will find the lovely Kenzie Taylor... She lives for this type of thing