Kim Kyu Ri started to go crazy as her relationship with Joo Sang Wook started to shake.

On the 13th episode of MBC Wednesday/Thursday drama "Cunning Single Lady" broadcast on APril 10th, Kook Yeo Jin (played by Kim Kyu Ri) and Na Ae Ra (played by Lee Min Jung) get into a verbal artgument and Kook Yeo Jin ends up putting too much pressure on her prosthetic leg and gets admitted to the hospital.

At this, Jung Woo went to visit sick Yeo Jin. He apologized and started by saying, "I made things tougher on you by saying thank you for being next to me. I can't be a good man to you. I'm sorry I said this too late" and rejected her feelings. Yeo Jin was of course, hurt.

CEO Kook (played by Lee Jung Gil) also threw a fit that he would take back the money that he Invested in D&T Soft Benchers. However, Cha Jung Woo's heart was already going to Ae Ra.

In the end, to resolve the situation, Yeo Jin called Ae Ra to the hospital room. As Ae Ra arrived, Yeo Jin said, "I didn't want to show this side of myself but I had to say something. Do you know what kind of situation CEO Cha is in? He could lose his company" and attacked her.

Ae Ra who didn't know anything asked, "What do you mean?" However, Yeo Jin who was already sensitive spouted, "Don't pretend like you don't know anything. It's so fake. Because of you, Jung Woo is going to be destroyed" and cursed her.

Moreover, she started to throw everything in sight and told Ae Ra to disappear. Becausee of this, Seung Hyun (played by Suh Kang Joon) had to hug and comfort Yeo Jin who had lost her sanity because of love.