Marriage is a unified institution. Marriage means a committed, legally sanctioned relationship between a man and a woman. That's what it means. That's what it means in the revelations. That's what it means in the secular law. You cannot have that marriage coexisting institutionally with something else called same-gender marriage. It simply is a definitional impossibility.

Same-gender attraction did not exist in the pre-earth life and neither will it exist in the next life. It is a circumstance that for whatever reason or reasons seems to apply right now in mortality, in this nano-second of our eternal existence.

One way to read the Book of Mormon is as a book of encounters between fathers and sons. Some of those encounters were very positive and reinforcing on the part of the father of a son. Some were occasions where a father had to tell his son or his sons that the path that they were following was incorrect before the Lord.

Homosexual behavior is and will always remain before the Lord an abominable sin. Calling it something else by virtue of some political definition does not change that reality.

There's really no question that there is an anguish associated with the inability to marry in this life. We feel for someone that has that anguish. I feel for somebody that has that anguish. But it's not limited to someone who has same-gender attraction.

Merely having inclinations does not disqualify one for any aspect of Church participation or membership, except possibly marriage. But even that, in the fullness of life as we understand it through the doctrines of the restored gospel, eventually can become possible.

If you have some legally sanctioned relationship with the bundle of legal rights traditionally belonging to marriage and governing authority has slapped a label on it, whether it is civil union or domestic partnership or whatever label it's given, it is nonetheless tantamount to marriage.