As Evie said, I’d be looking at location first, and then just see if there are any discussion topics that interest you. Paganism is such a broad concept. Maybe start your own posts about what you’re into there.
For those of you who are openly Poly, how do your pagan families accept your love dynamic? Are they blindly accepting? Exuberantly happy to have you? Do other couples shy away because they fear that you might take their man/woman?