In "Cantabile Tomorrow," Joo Won started to get jealous of Park Bo Gum.
On the episode of KBS2 Monday/Tuesday drama "Cantabile Tomorrow" broadcast on November 4th, Sul Nae Il (played by Shim Eun Kyung) heard Lee Yoon Hoo (played by Park Bo Gum)'s words that he would buy her a meal and started to follow him right away.
On this day, Sul Nae Il put up a piece on her social networking site that the lunch that Lee Yoon Hoo gave was extremely delicious. Looking at her SNS, Cha Yoo Jin (played by Joo Won) felt pretty offended.
Cha Yoo Jin complained, "I gave you food and you're putting it up on some site like this? Why are you putting up pictures?" he muttered.
Then he said, "Oh for me to see this? I have no reason to look at this. I don't support this. What is going through her mind" and got slightly jealous of Lee Yoon Hoo.
Meanwhile, "Cantabile Tomorrow" is a KBS2 Monday/Tuesday drama adapted from the Japanese manga with the same title. In the drama, Yoo Jin (played by Joo Won) is a piano major with a world famous pianist father who is not only attractive but has exceptional music talent. However, his father cannot ride in a plane or boat because of childhood trauma and such limits his future opportunities.