Secret Love 2013 -

Min-hyuk's insecure fiancée and a congressman's daughter who becomes jealous of Yoo-jung. Notable Accolades Secret Love (TV Series 2013) - Plot - IMDb

The lead pair, Ji Sung and Hwang Jung-eum, had such incredible on-screen tension that they were cast together again just two years later in the massive hit Kill Me, Heal Me Dark Romanticism: secret love 2013