"Secret Dating" Kyung Soo Jin said to Kim Hee Ae that Yoo Ah In was her boyfriend.

On the 4th episode of JTBC "Secret Dating" broadcast on March 25th, Lee Sun Jae (played by Yoo Ah In) was imprisoned for threatening a person.

On this day, Park Da Mi (played by Kyung Soo Jin) talked about her friend Lee Sun Jae's incident as Oh Hye Won (played by Kim Hee Ae) came to her shop.

Park Da Mi said, "The lady is so nice so it's good that you had courage. I think you'll treat her well. My boyfriend was arrested for beating someone. He's not supposed to be like this but suddenly went to service and went crazy" and cried.

At this, Park Da Mi said, "I just didn't sleep with him but I'm going to marry him. Life is so screwed up. I almost went to college for piano but my mother died" she added.

Oh Hye Won automatically thought that Park Da Mi's boyfriend was Lee Sun Jae when she spoke of the piano. Park Da Mi said, "I don't know about this but the professor said I was good. You came home with the wife and if you leave him alone he'll go to jail, though you said he'd be a scholarship recipient. If you help me, I'll repay you forever."