According to Levinger, marriages that last but do not bring satisfaction are known as:

empty - shell

Explanation:

Empty - shell marriage -

It refers to the phase in the married life, where both the spouse live together, but as a separate personality and does not really care about each other, is referred to as empty shell marriage.

There is loss of charm and passion in the marriage and both the individual does not really think of talking or tries to resolve the situation and are happy as alone in their own space.

Hence, from the given statement of the question, the correct term is empty-shell marriage.