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During the Chuseok special of 'Happy Together 3', the actor revealed he wanted to be there to support Lee Bo Young's drama, sharing, "I wanted to visit her on set to show my support, but since she is acting out a love story with Lee Jong Suk, I thought it wouldn't be right." 

When asked how he felt about their kiss scene, he responded, "While I was watching 'I Hear Your Voice', I got excited too. I was so touched by their love that I shed tears. But those around me worried for me. They would send me text messages, asking, 'What are you going to do? Are you okay?' One day her kiss scene with Lee Jong Suk aired. That day, Lee Bo Young didn't have any filming, so we watched it together. We were watching it together when Lee Bo Young told me, 'Oppa! My kiss scene is coming on right now.' I replied, 'Uh. You tell me so quickly. But since we're both actors, [we understand each other].'"

On the other hand, Hwang Jung Eum shared that since her longtime boyfriend Kim Yong Joon is a singer, it's harder for him to understand her onscreen flames, "Yong Joon expresses his anger a lot. Yong Joon says, 'Why didn't you warn me?' I tell him, 'Sorry. I will tell you beforehand next time.'"