My Secret Lover Is My Bestie's Son - Episode 7

Karl, a competitive swimmer, moves in with Sophie — his mother Selena’s best friend — under the guise of a training camp in order to get close to her. He secretly engineers a scenario where Sophie catches her fiancé Michael cheating on her with Selena, exposing the pair’s years of deceit.As they live together, Karl makes steady advances and grows closer to Sophie.