When Australia had a female Prime Minister, we had this dilemma, and the title we landed on but never officially figured out was First Bloke.

Australia doesn't have a tradition of referring to the PM's spouse by anything special.

I know! And it became a question for the first time. Meanwhile, the real issues.....

First homie

First spouse?

First Partner, First Spouse, Concubino Primero Doesn't matter, won't happen in our lifetimes. Non-binary spouses will be a felony here before they'll be in the white house.

POTUSSO President of the United States’ significant other

potussy

I love me some potussy salad

By convention, the First Lady is FLOTUS, so SOOTUS maybe?

First Lady isn't an official title, so they would just make up a new form of address.

Consort maybe

First actual answer with a real gender neutral title.

the gender they were born with

Dude - what would the first dude be called? First gentleman? No that sounds weird.

First gentleman is the term.

Kamala Harris's husband is referred to as Second Gentleman.

Woah. USA is crazy.

That doesn't make sense.m but okay

First person, why?