Same-sex couples have not been authorized by God because they frustrate His plans for His children as well as stunts their potential. Members of a same-sex couple cannot obtain perfection nor can they have seed. At death the members of the same-sex couple will be separate. Their relationship will be terminated. Their case will be miserable.
I heard/read everything you said before this, but find you are not actually distinguishing between the two, other than based on what you think God wants in union. I consider that pretty darn close to blasphemy. To help you realize how mistaken you could be is a) the idea that the same-sex couple could express great love for each other but remain celibate and devoted (instead) to serving God. And b) to realize that Jesus when he walked the earth very much had loving relationships with male counterparts.
Part of what you're conveying and what everyone usually conveys when discussing this topic is the 'sex' aspect of the coupling. As if that is unavoidable in the discussion. Must be brought up that the female-male can procreate (via intercourse) and that the same-sex couple cannot, even while they can have intercourse. All of (their type of intercourse is that) which makes for utter disgust from the homophobic persons amongst us. The heterosexual non-homophobic people don't share this disgust. So, is it possible that these people are above God in wisdom and patience with such people? Or is it more likely that God being asexual is also not, even a little bit, disgusted by all the fascinating and/or perverse sexual behaviors that humans (regardless of orientation) may get themselves into?
That is why I believe it is important to not blur the lines of what marriage is. There are no double sided coins in the Father's Kingdom.
You've actually presented a case for such coins in the Father's pocket. That He would separate a relationship that he already joined, at time of death, because they 'loved wrong.' Yet, the couples that are all heterosexual have loved right, is your implication. Never mind the reality that our Father is not the God of Separation. Such a 'god' exists. Take a guess where this god resides. Could take a long time to find this god, or could just look in a mirror and if you see an entity as a body, rather than 'only as Spirit' then chances are you are seeing through that god's eyes.
There are purposes for everything God does. And everything He does is mandated by Law.
It is the Law of the Universe that only opposing genders can be joined in a marriage covenant, because they have the potential to become perfect and to have seed.
God did not create imperfection. He didn't start us out at square one to work our ways up. We did this to ourselves, via subverted divinity, listening to (and become as) the god of separation. Rendering us blind to (not seeing) only Spirit as Own Self. The Law is as simple as Love your brother/sister as Your Self, and Love Almighty God with all your heart and mind. Or put another way, teach only Love for that is What You Are.
I believe that we entered into a covenant, as the spiritual family of God, to love and respect one another and help everyone return to the Father after the completion of this mortal test.
We can only enter into a marriage covenant here in mortality. There were no marriages before this life and there will be no new marriages after this life.
We can all partake of the Holy Spirit, but that is not the same as the marriage covenant.
The Father's Kingdom is a kingdom of law and order. We are not all married one to another nor should we engage in behaviors that God deems only appropriate between married couples.
With you on much of this, but the appropriate behaviors part. At the very least, I would suggest let the Father alone, be judge of what is appropriate and be willing to forgive all possible notions you (or I) hold that seek to separate you from another based on feeble judgment of inappropriate behavior. Return to Love as the Judgment that makes sense, is sane.
I believe that there are absolutes in the universe. Light will always banish darkness. Marriage will always be only between a man and a woman.
In the Kingdom there are absolutes. Here, where separation is perceived real, not so much. Marriage concept is not needed in the Kingdom, because again, what God has joined together, let no man tear apart. That truly is an invitation to see perfection as it is now, not entertain ideas that separation could possibly, just maybe actually occur. It can't. Not in the Kingdom.