Well said. I think all your points are valid and forward-thinking. I believe a monogamous non-married relationship fits me best with similar expectations:
- We may grow apart at some point (and shouldn't force it to work)
- We may find someone who suits us better (it sucks, but we're humans seeking a better tomorrow)
- We dont own each other, or owe our lives (we are individuals with our own needs)
Why a polycule doesn't work for me:
- Jealousy and other relationship drama that I dont want to deal with
- My attention is divided among several people, my work, hobbies, etc. It sounds overwhelming.
- There's not enough time to remember everything about everyone, and that feels like a more superficial relationship.
I met someone recently and discovered we have sexual compatibility, but not romantic. Hypothetically, I can see how having another person involved could fill that romantic need. Maybe one day.
Talk to her, dont bring up any history.