Mrs. Cale Henituse's feed

What the heck? Worst plot twist. The former princess lived in their place for a year? Or years (i don't remember!) as his sibling and now they suddenly got engaged? And he’s even considering to add another 3? I understand how poly-relationship works, but to be discussed it “normally” with kids is so wild. And the fact that the mc is somewhat still had a 50 yrs old mentality is terrifying.