Bro, I frequently have mistresses or ex-mistresses in the same room with my wife. Recently, I had 2 ex-mistresses
in the same room as the wife. None of them knows anything at all about the others and my wife trusts me 110%.
And everything I say and do around her is geared to maintaining that trust. It's now second-nature.
But I think I've now given up on mistresses. I've been lucky and I just don't want to tempt fate anymore. Plus,
they're just too much trouble and, anyway, the simple act of sex with WGs is better.