The Latter-day Saints' Millennial Star identifies marriage between a man and woman.
"The Vicar Tries Again," Latter-day Saints' Millennial Star, April 16, 1903.1-2
The Lord revealed to the Prophet, first the doctrine of celestial or eternal marriage, by which a man and a woman under divine sanction could be sealed as husband and wife for eternity as well as time, as Eve was given to Adam before death came into the world ; this is a sacred ordinance between a man and a woman. Second, the Lord revealed that those ancient worthies who were His servants sinned only in that which they received not of Him, thus establishing the righteousness of plural marriage when the parties thereto were united under divine revelation, and the ordinance was sealed by divine authority, but when, as in the cases of David and Solomon, relationships were entered into in violation of God's law and simply through lust and disobedience, they were not justified, but were under condemnation.