Marriage is not a noun, it’s a verb. It’s not something you have, like a house or a car. It is not a piece of paper that proves you are husband and wife. Marriage is a behavior. It is a choice you make over and over again, reflected in the way you treat your partner every day.

Barbara De Angelis (b. 1951) American relationship consultant, lecturer, author
Ask Barbara: The 100 Most-Asked Questions About Love, Sex, and Relationships (1997)