Yes, you are a poly person with one lover. I mean, one can be mono with 0 partners! Your "poly ID" is in your wiring not your current loves...er... status number?
Awkward working, sorry.
But yah -- poly and closed with one lover at this time, here myself for this time of "parenting small kid and eldercaring old parents" -- I'm not adding more people to my plate now!
So at this time of YOUR life you are a poly person choosing this framework because this works for YOU guys. It's all good.