SEE ALSO: The Outstanding K-Dramas of actress Park Shin Hye

When asked if he found it difficult to act with a female lead 9 years younger than him, Kim Rae Won said, "I didn't feel the age difference at all... We treated each other like friends and that was the right thing do to... I tried to match with Park Shin Hye, and because I'm the sunbae, Park Shin Hye would try to match with me, asking, 'How do you want to do this?'"

He went on to add, "Our chemistry could only be good because we tried hard to match each other. In some dramas, some actors just close themselves off and do their own things. But with this drama, we opened ourselves up. Acting is not something you do by yourself. I could have done a better job with Hong Ji Hong's character too, but people will not want to watch it for those reasons, and it would be useless. On that end, Park Shin Hye is very smart." 

On any plans for marriage, Kim Rae Won simply answered, "I don't know. I filmed two movies and have a lot to do still. [Marriage] probably won't be for another few years. I'm not self-centered, but I have big dreams for the 2nd leg of my career."