See Mass Bar Ethics Opinion No. 85 - 3 - Summary: «An attorney may, in certain circumstances outlined, act as a single mediator or as a co-mediator with a lay family counselor in divorce mediation, provided that the attorney takes certain precautionary steps, including explaining to the parties that the attorney is not representing either party, explaining the risks of proceeding
without independent legal counsel and obtaining the informed consent of each party.
They should each have
independent legal advice, and if they arrive at a separation agreement
without such advice available to both parties, a court may consider the failure to obtain separate
counsel as evidence of unfairness if the agreement is later attacked.