#7 resonates with me as well - MrS and I never discussed it explicitly but it seemed axiomatic to both of us.
I wrote a long version of my thoughts on "couple boundaries" (as opposed to "personal boundaries") in one of my blogs here:
Perhaps I hadn't presented the boundary in the correct way to Dude - I had just recounted the conversation that I had with MrS (both of my boys have explicitly agreed to full disclosure of any/all details to be shared that I think are relevant) including the fact that MrS had proposed it and that I agreed. Perhaps he took this to mean that I had agreed reluctantly
(which I had NOT...I thought it was good idea.)
All fixed now.