[2] He is best known for starring in the sitcom Living Among the Rich (2011–2012), the melodrama The Innocent Man (2012), the period drama Jang Ok-jung, Living by Love (2013), and the fantasy drama While You Were Sleeping (2017).

He recently gained immense recognition for portraying the role of Yoon Gyu-jin in the weekend drama Once Again (2020).

In 2013, Lee was cast in his first leading role in the weekend drama A Little Love Never Hurts (2013).

Lee is the only grandson of the late businessman Kim Jong-jin, who served in executive positions at POSCO and Dongkuk Steel.

[5] The couple married on March 24, 2024, at a hotel in Seoul.