Trudy Barch asks:
What is the correct term nowadays for…
A) 2 males living together as an unmarried couple? Married couple?
B) 2 females as an unmarried couple? Married couple?
C) Male and female as an unmarried couple?
I would call them, respectively:
A) partners (unmarried men) and husbands (married men)
B) partners (unmarried women) and wives (married women)
C) partners (unmarried opposite gender)
Others may feel differently.
Researching: Chanan, Blumenblat, Karasik, Thomashow, Cohen, Rubinstein, Bunderoff, Pastilnik, Nemoyten, Diskin, and variations of all.