Again Anewme... I think it depends on the situation. In your situation, I think it would have been completely appropriate.
I have gone the jealous/possessive route (with a girlfriend) and I came off as this controlling, psycho, smothering, jag-off (which I was).
Once I wised up and made it clear that I didn't give a damn what she did, that is when I got all sorts of attempts by her at reconciliation.
If he is a good husband, and she still needs to play these kind of games to feel desireable and wanted then she really isn't worth the effort.
Well LL you have heard from a couple of schools of thought. I would say both have there points and merits. You need to decide which best applies to your situation.
Regardless of what you choose, Anewme is right, that little jag-off needs to have his face kicked in.