"When a Man Falls in Love" The dark sides of Yeon Woo Jin and Chae Jung Ahn will begin to stir up the drama.

April 24, the preview that was featured at the end of the 7th episode of the MBC drama "When a Man Falls in Love" revealed Lee Jae Hee (Yeon Woo Jin) and Baek Sung Joo (Chae Jung Ahn) revealing their dark sides for love.

Lee Jae Hee grew up getting whatever he wanted all his life. However, Seo Mi Do (Shin Se Kyung) was one thing that he couldn't seem to get. When he realizes this, he becomes obsessive even when she makes it clear to him that she is not interested. When Lee Jae Hee sees Seo Mi Do kissing Han Tae Sang (Song Seung Hun) at her bookstore, he begins to reveal his dark side of himself.

Baek Sung Joo also started to become suspicious of Han Tae Sang and Seo Mi Do's relationship. Even when she finds out for sure that they are romantically involved, Baek Sung Joo throws herself at Han Tae Sang. When she learns about the fact that Lee Jae Hee is also in love with Seo Mi Do, she begins to figure out what is going on and plots to get what she wants. Ironically, Baek Sung Joo is the only one who knows about the news of Han Tae Sang's biological mother Yoon Hong Ja (Jung Young Sook).

It appears as though Baek Sung Joo and Lee Jae Hee will risk anything to do everything to win over the person they love. The preview hinted that their dark sides will begin to interfere with Seo Mi Do and Han Tae Sang's relationship.

Their change in attitude will begin as early as the upcoming episode. Lee Jae Hee will begin to change his attitude towards Han Tae Sang and will begin to show affection in front of everybody in the company. Baek Sung Joo appears as though she will begin to forcefully make Seo Mi Do choose between Han Tae Sang and Lee Jae Hee.

What kind of turn will the story take in the MBC drama "When a Man Falls in Love?" How will Lee Jae Hee and Baek Sung Joo affect the outcome of the love lines?