Finally, the day has come where Lee Jong-Suk openly talked about his relationship and mentioned how IU has changed him. Why Lee Jong-suk fell in love with IU : 'Part of my heart always belonged to her', a look at their quiet love story Both stars met as hosts of the Inkigayo show, and stayed friends Singer and actress IU and actor Lee Jong-suk are still in a romantic relationship, according to sources. They have been dating for three years and have been spotted at IU 's concerts and other events. South Korean celebrity couple IU and Lee Jong Suk are rumored to have broken up after three years of dating. The couple was confirmed to be dating in 2022 after Dispatch came bearing proof of their romance during its New Year's relationship reveal.