My opinion, part of keeping health in a relationship is also maintaining some privacy.
My exdh would have been absolutely furious with me if he'd ever found out I'd discussed our relationship with a friend or even expressed the slightest dissatisfaction in him, or the marriage, or anything really.
As a result I just never said a word to friends about what was going on in the marriage. Never texted a friend when I was down, etc. because I assumed he'd see it and do his nut.
And as a result I became isolated and vulnerable to his controlling tendencies, suspicions and delusions. And eventually the relationship fell apart completely.
I think in really healthy relationships, there is plenty of room to do the wrong thing (e.g., you have lots of privacy)... and yet... you both do right by each other even when the other isn't looking and would never know.
Looking over each other's shoulders all the time? Going through each others phones as a matter of course? That's not health. That's a band aid on a relationship that's apparently built on the assumption that you'll only be good to each other when you're under surveillance.
Not my cup of tea tbh