My son, Connor, and I recently had that experience, and besides wrestling with your conscience as to what is morally necessary and appropriate, you do have certain legal obligations you need to satisfy.
In 1971 Michigan’s divorce law was changed to provide for “no-fault divorce.” Prior to 1971 you had to allege, and then prove, that your spouse had either committed adultery, was incompetent, imprisoned for more than three years, deserted you or was a habitual drunkard to get divorced.
It’s a matter of endurance. Marriage, that is. In her book, “The Secret Lives of Wives: Women Share What It Really Takes To Stay Married,” Iris Krasnow interviewed 200 women managing to stick it out in long marriages.