Verbal agreements between the parties are totally unenforceable in law. You must memorialize an agreement in writing and file it with the appropriate court. Any Settlement Agreement between the parties is subject to approval of the court. In addition to certain statutory requirements, the Agreement must be “fair”, not entered into under duress and each party should have advice of independent counsel. Retaining a counselor to draft, file and argue the matter in a court is the best course of action. This is really not a time for self help.
MA does not recognize legal separations, but does have other provisions to protect the separated spouses. If you are contemplating a separation, consider a separate support petition. This is will allow a couple to establish a support order for spouse and custodial parent, if you have children. It will NOT address distribution of property and does NOT dissolve the marriage.