“If it was sex between the parties, the Bible wouldn’t have anything to say about heterosexual fornication; just adultery, bigamy (maybe) and deviancy. The first act of what we consider fornication (premarital nookie) would be a wedding.”
How does one have sex with a member of the same sex? This i do not believe to be possible, and therefore “marriage” between the two parties is equally not possible.
As for adultery and bigamy both could have been regarded as unfaithful and deceptive acts.
One doesn’t. That would be one of the deviancies mentioned.