It is possible for someone to have two primary partners even when neither of them has another partner. Phy's story, in the life stories section, is an example of that. I mean, its all well and good for her to not want too much pressure, but what if both you and her husband had found other partners, but then both suffered break-ups? Would she have insisted you both find new partners again, to avoid making her feel pressured? Best to take each relationship on its own merits, rather than making them dependent on each other, I'd say.
Me, 30ish bi female, been doing solo poly for roughly 5 years. Gia, Clay, and Pike, my partners. Davis, ex/friend/"it's complicated." Eric, Gia's husband. Bee, Gia and Eric's toddler.