The arrangements used by same-sex couples are more frequently being used as models for opposite-sex couples. Instead of entering into a standard-form legal marriage contract and then executing additional legal documents to undo the provisions of marriage law, many opposite-sex couples are following the lead of gays and lesbians and opting for alternatives. These couples are neither morally nor socially inferior to traditional couples. Their relationships merely differ from those of traditional couples and require distinct legal arrangements. In the same way that a small, professional firm’s needs are different from a large corporation’s, different types of relationships need different rules.