Sarah J. Maas said this quote
“ They’d been forged of the same ore, two sides of the same golden, scarred coin. She’d know it when she spied him atop the execution plataform. She couldn’t explain it. No one could understand that instant bond, that soul-deep assurance and rightness, unless they, too, had experienced it. But she owned no explanations to anyone - not about Aedion. ”