Hoverlab, a South Korean news commentary site on YouTube, claimed that the actor and the late actress Kim Sae-ron had been in a six-year relationship since she was 15 years old.

Kim Soo-Hyun was named a Prada brand ambassador in December 2023. He also attended the company's fall 2025 men's ready-to-wear runway show in Milan. The latest controversy around dating a minor Kim Sae-Ron is however leaving a deep impact on his personal and professional image along with his brand value.

Kim Soo Hyun's agency has finally addressed the rumours about his relationship with late Korean actress Kim Sae-ron.After the death of the High School Love On star’s in February, some pictures and letters surfaced on the internet