Tell him to disengage from the wife.
Aende mtaa nyingine, rent a house, and seriously ignore the wife.
Next atume lawyer to inform the wife that he intends to file for a seperation.
While at it involve his in-laws so that wife ajulikane what kind of a woman she is.
Then make sure any further communication is via a lawyer.
Meanwhile atafute a youngling to take out stress on. Pamper her and make sure the wife knows whats happening.