Arelationship marked by intimacy and commitment but low or lacking in passion is called a pattern often found among couples who have been married for many years.

Affectionate love.

Explanation:

As the exercise briefly describes, Affectionate love is marked by intimacy and commitment but low or lacking in passion. This is a pattern often found among couples who have been married for years, or in, for example, a newlywed couple showing affection during their first dance; showing their affection but not necessarily passion.