I was under the impression that a bisexual SP enjoyed more a duo lol
I play with men all the time. It's a special kind of fun when I get to play with a woman aswell.

I will admit I have made a husband or 2 jealous

not the wife at least, and with a couple often she's the one more likely to not want to repeat if she feels threatened. But the goal is everyone has fun, and him too. Often it is her first time for a 3some, and if she feels threatened or doesn't enjoy, he won't get to have more either. So it becomes a delicate juggling act, and I need him on board to make sure she enjoys, and wants more for his progressive future encounters.
When the couple is more used to having 3somes, the balance is more level and open.
I haven't had the privledge to be booked for duos yet, but from my understanding the attention is more him, than everyone, understandably, but would still be a lot of fun.