But a culture can also be created by just two people who have agreed to share their lives. In essence, each couple and each family create its own microculture. And like other cultures, these small units have their customs (like Sunday dinner out), rituals (like a champagne toast after the birth of each baby), and myths—the stories the couple tell themselves (whether true, false, or embellished) that explain their sense of what their marriage is like and what it means to be part of their group.

