What helps
Picking a side, even in silence, shows. So does repeating to the other person what they told you. You receive what they say without judging the other party, and without a strategy — neither 'cut them off' nor 'forgive'.
They do not have to convince you. A short message is enough. In the days after, you do not ask who won. You do not make the conflict every exchange.
Later, you do not follow the case to 'know where it stands'. A date that returns is not the anniversary of the conflict. It is a sign about them.
Concrete example
"I'm here for you. I'm not deciding."
Key takeaway
- You listen to one person. You do not judge two sides.
- What they tell you stays there. You do not carry it.
Try next time
Reply with no opinion of the other person, and no plan for the relationship.