'Secret Love Affair' Yoo Ah In and Kim Hee Ae started their dangerous love affair while living together in the house of Kim Hee Ae.

On the fifth episode of the cable channel JTBC's "Secret Love Affair" which aired on March 31, 2014, Lee Sun Jae, played by Yoo Ah In, and Oh Hye Won, played by Kim Hee Ae, started living together at Oh Hye Won's house. They shared a kiss and hugs, continuing their dangerous love affair. When they met later at a café, Lee Sun Jae told Oh Hye Won that he would go back to the old house he used to live with his mother because he was afraid that, if he liked her too much, other people around them will know. Later on, Lee Sun Jae turned down Oh Hye Won's husband Kim Joon Hyung's offer to buy him new clothes and went back home. Kang Joon Hyung got mad, but Oh Hye Won thought it was a good idea that he went home. In related news, cable channel JTBC's drama titled "Secret Love Affair" is a story of a forty something woman, Oh Hye Won, who is played by actress Kim Hee Ae, and a naïve genius pianist Lee Sun Jae, played by actor Yoo Ah In.