He is best known for his roles in The Classic (2003), Tale of Cinema (2005), A Love to Kill (2005), Flower Boy Ramyun Shop (2011), Rain or Shine (2017–2018), and My Liberation Notes (2022).

[1][2][3][4][5] Lee enlisted for his mandatory military service on November 9, 2009, and after 22 months of active duty at the Armed Forces Seoul Hospital, he was discharged on September 1, 2011.

[6] On August 23, 2022, Lee's agency announced that he would marry his non-celebrity girlfriend in September on Jeju Island.

[7] They married in a private ceremony on September 24, 2022, on Jeju Island, where only family members and friends attended.

[8] In November 2022, Lee donated a television appearance fee to a shelter for stray dogs.