It's balance, and trust.
I don't tell Mrs wrx everything I do, say, think - it would take too long and require too much explanation, so
'Anything happen at work today ?'
'No, not much'
Similarly I don't quiz her/expect her to tell me everything.
I might come-out with some sort of smutty double-entendre with some of the girls I work with, because they're married and 'safe', will take it the right way and give it back because they consider me 'safe' too.
I wouldn't tell Mrs wrx about this, don't consider it 'unfaithful' or 'disrespectful', because it's harmless.
If one day I misjudge it and suddenly it feels dangerous, I'll run a mile...