Or perhaps he attempted to tell Marcus how he "feels" about things! ;)
Then it's a questions of who imploded! :-)
NG - sometimes I feel that you go through all sorts of mental gyrations simply so you'll be in the 'right' when your explanation is done. In your first post you even say you don't want to be an accomplice to cheating... then say, but it's not cheating if...(followed by justification). One day your attempt to use words to re-define reality might get you in trouble if you're not careful.
I said no, it's not -- I don't want to be an accomplice to cheating -- as in some states it Can be, but if Both people decide & agree to be Separated which allows one to date others -- and live apart and have been Separated for over a year -- no, that's not cheating. She said yes it is! I said, "How?"
Contrary to your belief, cheating is defined as having extramarital sex. Marriage is a state of being defined by the government (or social context if you prefer). Once you marry, you're married until the judged says you're not and signed the divorce decree or the doctor says your spouse is dead and signs the death certificate.
Maybe neither spouse cares, maybe no one in the family cares... That's speaks more about the people involved than any discussion.
I believe it's not necessarily a betrayal of another person but is a betrayal of one's vows and one's self.