Hi Miss
by giving him the chance to decide, he takes back responsibility
if it is flirting it stops if he can't tell his wife and doesn't want them to
if he is seriously harassing/stalking someone that could be filed as a complaint to police
So he can be confronted on that too
I knew someone who did file a complaint not charges to the police and it made the guy stop
Can't take on the fear/responsibility yourself; have to put it back on him to consider the consequences
And yes, even flirting if it's not within bounds, should stop if he's married. he does need to be confronted
on that even if it isn't anything more. Sounds like he was seriously going after this woman, like hounding her.