1.

"We must understand that any persuasion to enter into any relationship that is not in harmony with the principles of the gospel must be wrong."

A monogamous same-sex relationship in no way deviates from the principles of the gospel.  However, it is interpreted that since both members of the duo are of the same sex, this relationship is "unnatural."  "Unnatural" is a synonym for "wrong" in the LDS Church.  I believe life is too complicated to be described by plug outlets and pipe joints.  Of course a male joint won't attach to another male joint.  But you know what?  I'm not a plug.  I'm a human being.  I believe my biology, psychology, physiology, and spirituality are a bit more intricate than a plug's.  My point is, it's not black and white.  No matter how many times I say that, the people who think it is black and white are too insane (I mean that quite literally) to even consider other thinking.  You only become sane when you realize your own and the world's insanity - and change.

Who are you to define what is "natural" and what is not?  Lack of understanding about something doesn't make it "unnatural."  Take gravity, for instance.  I'm in physics and I know physicists know NOTHING about gravity.  It's the weirdest force.  It hasn't yet been "combined" with all of the other forces.  That's the purpose of the various grand unified theories out there (like String Theory).  Being the physics nerd I am, then, I have to pick at Elder Packer's quote about voting to change the law of gravity.