If you could have done better, you should have, plain & simple.
that's just it -- I'm not seeing where F could have done much better as it relates to his wife's marital "complaints." Not saying he's a saint, but my read on the sitch (and granted, it's only based on what we read here of his posts -- perhaps Gnosis could weigh in on this, as he knows the sitch better) is that F's wife's gripes are just gaslighting and re-writing of marital history.
We'll have to agree to disagree on whether or not marital vows are "just words."