>>>these unions are not about sex with multiple outside partners. Nor are they relationships where one person is involved with two others<<<
Why not? Once you make the argument that any relationship between consenting adults that they call marriage is, indeed, a marriage, what’s to stop it? Why not a brother and a sister, or a mother and a son, or a father and a granddaughter? Why not a hive? It works for the mole rats. Why not a lease - you can marry me for a certain period of time, then bring it back to the showroom and trade it in for a newer model. How about marriage for a night - get the benefits now, then forego the benefits at the end of the contractural period.
And I haven’t even gotten into the science-fiction scenarios - how about a woman and her dead husband’s collection of frozen sperm? They can still make a family together - and maybe his will indicates that as long as his sperm is viable, so is the marriage. How about a man and his Japanese newscaster robot? Are you married if you agree to donate sperm for conception of a child but agree not to be involved in the raising of the child? Whose decision will be paramount in the custody case - the court or the people involved?
In any case, a society that allows gay marriage has no choice but accept shari’a law and allow an Islamic man his multiple wives.
To put in the delicate words of Bender: “Yep, we’re boned.”
Right--------------------Wrong
When try to live closer to the right edge
we move farther away from God.
Then we reap what we sow.