Reborn: The Prince's Bride

Sienna Sutton discovers her marriage is a sham; her husband married her for revenge, loving his childhood sweetheart who pushes Sienna to her death. Reborn, she reclaims her heiress status and gets engaged to her childhood sweetheart, The Crown Prince. Her ex-husband begs forgiveness. She discovers the paper airplane that saved her came from her childhood sweetheart, not her ex-husband, who has been silently protecting her.