

I’m in the same place as you with my spouse, but we didn’t start with not trusting each other. I just never worry about my spouse knowing things about me—I cannot imagine what I wouldn’t tell her anyway.
My spouse has (multiple) physical journals lying around the house. I would never read them—she doesn’t worry about hiding them.
I comment in a different part of this thread how my spouse and just share everything, but I complete get what you are saying.