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During his talk, he expressed gratitude toward the cast member who worked with him on drama 'It's Okay, That's Love', including Jo In Sung, Gong Hyo Jin, Lee Kwang Soo, and EXO's D.O. 

He shared, "In Sung comes over to my house. My kids go over to Hyo Jin's house to play. Kwang Soo sends presents for Jun and Bin (his kids). Go Hyun Jung also sends them gifts, but because my kids don't watch tv, they have no idea who Go Hyun Jung is." 

About D.O, Sung Dong Il said, "Someone as busy as him came when my mother died, and stayed up all night with Jo In Sung [for the funeral]. Gong Hyo Jin held my wife's hand for two nights and three days straight." 

It sounds like the cast of 'It's Okay, It's Love' are tight-knit and full of loyalty for one another!