Rousette - we do, a bit... DP is very careful not to break confidences, and it's important, even within a poly setup, that the individuals/couples within it have some privacy, and some things which are just between them.
So yes, it's more likely to be OSO and I talking about it than either of us with DP. We're more likely to talk about stuff we've got up to in the past than what we did last night.
No desire on either side for OSO and I to 'get jiggly'! She's 100% straight, for a start (I'm a little less equivocal on that) but we're just not attracted to each other like that. Never say never, but I'd say it's highly unlikely.
We've shared a bed once, but it was after a really busy, long day and all any of us wanted to do was sleep! (PJs all round...)
It really is less about sex and rampant orgies that most people imagine!
Mostly we talk about work, children, households, books, yoga, philosophy, food, holidays, where to get a really good massage...