Lee Dong Gun, born July 26, 1980 in Kang Nam, Seoul, South Korea, made his debut in 1998 as an actor and singer. However, he has long since given up his singing career. Lee once stated that his singing career was like a wheel; sometimes he's up and sometimes he's down, and if it were not for his successful acting career, he would have already left the entertainment business.
He was enrolled in the Department of Theatre and Cinema at Hanyang University but was recently expelled for his low attendance record.
It is speculated that Lee is somewhat fluent in Japanese because he has repeatedly used the language while acting in "Friends" (2002) and "Stained Glass" (2005).
Lee decided to take a break from acting in 2006 claiming he felt overwhelmed with his workload in both television and film. He resumed his acting career in 2007.
Lee Dong-gun was dating Han Ji-Hye, his costar from "Sweet 18" and "My Boyfriend is Type B" but their highly publicized relationship ended after 4 years. But they were told to work only forgetting the past.
At 1 AM on March 20, 2008, Lee Dong Gun's 19 year old brother, a student at Sydney University, was fatally stabbed in an incident involving two groups of men beneath the World Tower in Sydney, Australia. Another 20 year old man was critically injured. Lee Dong Gun left for Sydney to identify his brother's body.
Lee enlisted for his mandatory military service in June 2010 for 21 months of active duty and was appointed Honorary Ambassador of Military. He was discharged on 28 March 2012. Also on the same day, he was appointed promotional ambassador for the 2012 Korean Formula One Grand Prix being held at the Korea International Circuit in October.
In November 2012, Lee signed on exclusively with FNC Entertainment, who will manage his future activities, and comeback project.
In May 2015, Lee Dong Gun and Park Ji-yeon first met when they were cast to star in the Korea-China collaborative film Encounter, where the two play a couple. They revealed their relationship to the public just a month after they had started dating. In February 2017 the couple broke up.