He Knew My Secret the Moment I Walked In

An orphan poses as a wealthy family's long-lost daughter — only to find the eldest son is the billionaire she dumped two years ago. He recognizes her the second she walks in but plays along: covering for her in public, cornering her in private. Between a scheming fake heiress, a cold patriarch, a quietly helpful stepmother, and a dumb brother she slaps into submission, she thinks she's running the show.