This is similar to breaking up a fight between two siblings until they cool down and can find the maturity to apologize again.. if you just leave them go at each other someone will get hurt or their attachment crumbles into nearly nothing.
Splitting up two people with their emotions in flux can produce a much healthier result than one pursuing the other and trying to win them over...particularly when they aren't in the mood to hear it... such as when an affair is taking place.
