Tbh my partner is both controlling and very nosy, and it can feel too much having them enter every forum, part of my life.
Some conversations interactions should be private. Partners should not get to read private correspondence. Or have full access to your brain and thoughts!
That said, Facebook is such a different thing to different people. And it's used in many different ways. For lols, yearbooks, photo collections, dating, shopping, politics and spying.
I must admit I have thought countless times about blocking my partner from accounts!
We have many persona's.
The whole lack of boundaries and safeguards in Facebook, has led me to just treat it like a public forum. Which is a shame as I value small private back and forths and group interactions.
Of course I am projecting here. It's a very complicated space.
But FB can be the preserve of school friends, brief interactions and family. I find it such an abhorrent mess and waste of time I stay well clear, but that's just me.