Dario is not a hero; he is a cold, calculating sociopath who treats Posy more like a prized possession than a partner. However, Posy has a secret: she’s much smarter than she lets on. When Dario discovers a perceived betrayal and discards her, Posy doesn’t just cry—she runs.

Run Posy Run by Cate C. Wells: A Deep Dive into the Dark Mafia Romance

For fans of the "grovel" trope (where the hero has to work hard to earn forgiveness), this book is often cited as the gold standard.