I recommend "Witch Defies Heaven: The Two-faced Emperor, Step aside" to you. Although it's a sadistic love story, the ending is beautiful. This book told the story of a female protagonist who was used and reborn, how she faced love while taking revenge. The male protagonist was a cold emperor, but his love for the female protagonist was real. The plot was touching and the ending was sweet. I hope you like my recommendation. Muah ~