Keep the message proportionate
Use the shortest explanation that still tells the truth about the event, impact, and current position. For a message about how to resolve conflict about a mutual ex, use this factual base: use one or two recent examples and name the trust, effort, money, or inclusion issue they created.
Give timing that can be trusted
Give a realistic date, a simple option, or a direct yes-or-no question and avoid vague promises such as soon. Ask how your friend understood the situation and propose one change that can be tested. Make the immediate next step clear enough that the recipient can answer without reconstructing the entire history.
Close the loop without drama
Do not assemble mutual friends, post indirect messages, or use confidential information as evidence. Stop direct contact and use appropriate support when there are threats, stalking, coercion, or safety concerns. A calm ending is more credible than a warning, a grand gesture, or language designed to provoke a response.