Ha Suk Jin and Kim Ji Suk, same age best friends and also co-stars from JTBC's 'Problematic Men', appeared together on this week's MBC 'Radio Star'! 

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During the show, Ha Suk Jin shared a story that went, "On a program, we got a question that asked, 'Have you dated a flight attendant before,' and the others' expressions fell completely, claiming that they hadn't. So I was the only to admit it. But afterward, at a personal gathering, I asked them, and they had gone on dates with flight attendants recently without me." 

To this, MC Kim Gu Ra asked Ha Suk Jin to name these "others", to which the actor coolly tattled with, "Kim Ji Suk, Jun Hyun Moo." 

While the MCs and the other guest members had a good laugh from Ha Suk Jin's tattling, Kim Ji Suk looked flustered, but didn't deny it either!