Betrothed Bride: Uncle Became the Lover — Episode 15

Anne is Gavin's childhood fiancée, but he betrays her with Grace on their engagement day. Heartbroken, Anne spends the night with a man named Robert and is forced to be his secret lover for three years. She is unaware Robert is actually Arman, Gavin's uncle. Anne believed Gavin saved her years ago, but it was Arman. Eventually, she and Arman unite and live happily ever after.