Good point Ariakas,
Hmm in terms of other questions, I do get the swinging thing. But also what happens is they clam up with me, then go to my mono partner and start to try to gauge how she is feeling, slanting it in language that makes her feel like they think I am abusing her or taking advantage of her and her good nature. So a lot of those sorts of questions I never hear.
To be honest, once they realise what it is, the curiosity just vanishes and I get a "well, if it works for you, good for you!" thing.
"Listen, or your tongue will make you deaf." - Native American Proverb