According to the actor's agency's statement, Kim Sae-ron was 19 at the start of the relationship and Kim Soo-hyun was 31.

After confirming that they were in a relationship, Kim Soo-hyun refuted the allegations that he dismissed Kim Sae-ron’s call for help over a debt connected to a drunk driving incident (DUI) that the late actress was involved in.

According to Goldmedalist – an agency established by Kim Soo-hyun and his cousin – the actors dated from the summer of 2019, after she became an adult, to the autumn of 2020. Kim Sae-ron was born in July 2000, while Kim Soo-hyun was born in February 1988.