The Male Lead Is a Prince Regent, and the Reborn Female Lead Was Deceived by a Jerk. They Died Together in Their Previous Lives

The female lead used to like a scumbag, and became the male lead’s sworn enemy for his sake. She was reborn as a teenager and pretended to be the male lead’s niece. She wanted revenge on the scumbag, but ended up falling for the male lead. I read it before, but forgot to add it to my bookshelf and now I can’t find it. Please help me look for it!