Law / DUAL CITIZEN (POL/AUS) WITH AUSTRALIAN PARTNER: IS IT POSSIBLE FOR HIM TO RELOCATE TO POLAND? [7]

Hi folks, bit of a long explanation but I'm hoping that someone on here may have had the same experience or be in the know a little better than I am. I've delved into the Polish government websites that I can understand with my basic Polish, but cannot seem to find a definitive answer. Any advice much appreciated!

Here's the scenario: I was born in Poland and moved to Australia at age five (I'm in my 40s now). I have dual citizenship between these two countries. As far as I know, I am free to move back to Poland with or without having work, however, I'm perplexed about my partner's status. We are registered de-facto couple (male and female) here in Australia, which is basically common law spouse for those that haven't come across this term. I know Poland is big on couples being married, but is he at all able to come with me (and consequently work if possible) as my de-facto partner? If so, does anybody know what I would have to apply for? If not, will the scenario change if we get married?

Thank you for reading and any insights.