I told her that one of my transparency boundaries would be that neither one of us is to meet up with anyone the other spouse hasn't met and approved of definitively.
Considering all that's gone on in your marriage recently, John, don't you think that a more appropriate boundary would simply be
"Neither one of us is to meet up with someone of the opposite sex except with both of us there as a couple"?
The way you have it set up now will forever put you in a case-by-case "Judge's seat," having to make a "ruling" every time, and it will be NO-WIN for you. Rule in favor, you're a weak cuckold. Rule against, you are "controlling."