
It was YA but NOT ROMANCE. I read about this book series between 2015 to 2018 while looking for books to read right here on Goodreads. It was fanatsy. The main plot was that 3 siblings were seperated at birth and later became leaders of seperate nations. There were 2 boys and 1 girl. The nations eventually war with each other. The siblings somehow learn of their relationship toward the end.