"When a Man Falls in Love" Song Seung Hun is betrayed one more time.

May 15, the 13th episode of the MBc drama "When a Man Falls in Love" featured Han Tae Sang (Song Seung Hun) trying to act clueless about the relationship between Seo Mi Do (Shin Se Kyung) and Lee Jae Hee (Yeon Woo Jin).

Even after discovering Lee Jae Hee's shirt in his own closet and then seeing him hug Seo Mi Do, Han Tae Sang proposes to her. Han Tae Sang tells Seo Mi Do, "I will forgive you for that night as well as today. "

Han Tae Sang creates a video clip for Seo Mi Do saying, "I may be lacking in a lot of aspects but really hope you understand and accept me. I am really sorry about yesterday. Mi Do, I really love you a lot." Right then, Seo Mi Joon (Im Jae Bum/JB) suddenly enters which puts a halt on Han Tae Sang's project.

When he returns home, he realizes that he left the video camera on record. Han Tae Sang watches the video tape that was created while he left. In the video, Lee Jae Hee and Seo Mi Do hug each other inside of his own house. The video clip shows Seo Mi Do telling Lee Jae Hee, "I can't do it. He won't let me go until I die. If you keep doing this you're going to be in danger."

Han Tae Sang falls into a state of shock after hearing Seo Mi Do's words and begins to cry. Suddenly, Han Tae Sang leaves in his car in a rush. After avoiding an accident by an inch, Han Tae Sang screams out in fury.

Will Han Tae Sang be able to forgive Lee Jae Hee and Seo Mi Do one more time after all the mistakes they've made? Or will Han Tae Sang begin planning his revenge against the two?