Once upon a time a friend used a word meaning:
An approach, attitude, or expectation of complete openness or transparency in an interaction or relationship.
If I remember correctly, it seemed to carry positive connotations, including simplified communication, schematic consistency, etc. I enjoy this logos, but can never find the word to clearly represent it.
No, I wasn't surprised when the pop-media reported his tryst. We practice _______.
p.s. forthright was suggested, but is a little off-target in that it speaks more to how direct someone is, than to how revealing.