"That Winter, The Wind Blows" Song Hye Kyo stars to become jealous.

March 14, the 11th episode of the SBS drama "That Winter, The Wind Blows" featured Oh Young (Song Hye Kyo) hearing from Jin So Ra (Seo Hyo Rim) that she is Oh Soo's (Jo In Sung) girlfriend. Jin So Ra tells Oh Young, "I'm his girlfriend. I have something to discuss with you about him. Please meet me before you tell him anything."

The day Oh Yong receives the phone call from Jin So Ra, Oh Young stares at Oh Soo and feels very jealous. All this time, sleeping together on the same bed was natural to her. However, Oh Young felt different and gets on the floor to sleep.

The next day, Oh Soo asks, "Why did you sleep on the floor?" and Oh Young replies, "Just, the bed was uncomfortable. Let's sleep separately from now on." When Oh Young tells him that Lee Myung Ho (Kim Young Hoon) is picking her up, Oh Soo says, "I feel jealous."

Jin So Ra does not appear in front of Oh Young. On her way home with Lee Myung Ho, Oh Young says, "Is jealousy between siblings normal? I used to get jealous even when my mom and dad were so close. I'm just not sure."

However, it was sure that Oh Young was beginning to develop feelings for Oh Soo as a love interest and not just as a brother. This emotion was rooted from being jealous after receiving a phone call from Jin So Ra.