CNBLUE Lee Jung Shin has proven himself successfully as an actor.

Lee Jung Shin showed off his tears playing the role of Kang Sung Jae, a trouble maker in KBS's weekend drama, "My Daughter Seo Young."

On the episode that aired on Sunday, Lee Jung Shin comforts his mother, who has been disappointed by his older brother Woo Jae (Lee Sang Yoon).

Lee Jung Shin approached Kim Hye Ok and says, "Mom, you have me. I'll always put you first until you pass away. I'm not going to meet anyone I love as much as you. If I have a girlfriend and you say no to her, I'll cut her out!"

His eyes reflected the tears that were shown in his mother's eyes. 

Lee Jung Shin, fully teary, said, "I don't think I'll ever meet a woman that I'll love more than you," and touched the hearts of viewers everywhere.

In this episode, Lee Jung Shin was seen in a tuxedo attending the marriage ceremony between his older brother Woo Jae and his tutor Seo Young (Lee Bo Young).