She graduated from Daeyoung High School in 2009. She went on a major in theater studies and graduated from Dongguk University in February 2015.
On January 1, 2014, local news Dispatch reported earlier that she and Lee Seung-gi are dating, releasing photos and describing a narrative of the couple’s date on October 8, 2013. According to Dispatch, the two started dating last September 2013. It followed the couple around for about three months starting October and describes it as a “nice love,” in which the two are very considerate of each other and the dates never go past 1AM. SM Entertainment confirmed that the two are dating, saying, “Lee Seung Gi and Yoona are currently at the phase in which they are getting to know each other.”. On August 13, 2015, Star News reported that both have recently parted ways due to busy schedules.