Welcome back to the Wefugees Community and thank you for reaching out to us.
I am not a lawyer, but I try to answer your questions as good as I can.
As far as I know, the naturalization is not (yet) possible for you as long as you are holding a temporary residence permit according to section 25 (5) of the German Residence Act. This presentation by the GGUA counselling centre (in German though) provides a list with the sections excluded as foundation for a German citizenship and they refer to: §§ 16a, 16b, 16d, 16e, 16f, 17, 18d, 18f, 19, 19b, 19c, 22, 24 and 25 (3) - (5).
However, after you obtained a permanent residence permit - "Niederlassungserlaubnis" - (in your case according to section 26 (4)), you may also be eligible for the German citizenship.
Regarding your partner: In general, the German (residence) law (and other law fields) is not taking unmarried partnerships into consideration. Unfortunately, they are usually not "recognized" in a legal sense.
Would you agree with my explanations dear @mbeon-fardeen?
I hope this helps and please don't hesitate to get back to us with any further questions.
All the best,