Two men cannot legitimately marry each other, nor can two women, no matter what any earthly judicial or legislative body may say. Marriage is by nature defined by the conjugal act between one man and one woman, a monogamous or exclusive union in which the two become one in a lifelong partnership (cf. Gen. 2:24; Mt. 19:4-6).
This truth is understandable not only through divine Revelation, but also through natural reason. For by nature, man and woman are made for each other. They complement each other both physically and socially. In contrast, homosexual relationships are unnatural and do not contribute to the growth of society. In fidelity to the teachings of Christ, the Catholic Church opposes homosexual activity and state approval of homosexual relationships.
The Catholic Church teaches that Christ elevated marriage to the level of a sacrament. A husband and his wife are called to imitate and participate in the nuptial union of Christ and His bride, the Church (cf. Eph. 5:21-33), in a communion of life and love that is open to the gift of children (cf. Catechism, no. 1652).
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