Marriage is the relationship between two people who have made a legal agreement to live together. When a man and woman marry, or wed, they become husband and wife. Most couples decide to marry because they love each other and want to spend the rest of their lives together. The majority of couples who marry plan to have children and raise a family. Weddings are important religious ceremonies in many of the world's religions and significant celebrations in most cultures. Married life is sometimes called matrimony.