My Happy Ending

Let’s Keep It A Secret (1x9)

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Jae-won’s father learns from Yun-jin that Soon-young cheated on Jae-won. Outraged, he demands to know what Soon-young plans to do with Jae-won, and they both decide to keep Jae-won in the dark. Soon-young finds out who A-rin’s biological father is and what happened with Jae-won seven years ago.