Kim Hyun Joong revealed himself to be a jokester on the set of 'Generation of Youth' and revealed that his co-star Lim Soo Hyang is actually younger than she looks!

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'Entertainment Relay' met up with the cast and asked Kim Hyun Joong and Lim Soo Hyang who were waiting to film their scene, "Gaya is Jung Tae's first love." Lim Soo Hyang jokingly felt betrayed by Kim Hyun Joong who falls in love with Jin Se Yeon in the drama and told him, "Am I your first love? You cheated on me." 

She then expressed her jealousy on Jung Tae and Ok Ryun (Jin Se Yeon)'s kiss scene, "I'm jealous. Do you like it since you get to do it with a young kid?" Kim Hyun Joong revealed, "Soo Hyang has a 'no ahn' [looking older than you are] image. But Soo Hyang and Se Yeon don't have much of an age gap." Soo Hyang shared, "We're four years apart." Kim Hyun Joong continued on the old jokes, "But appearance-wise, she is on the level of an aunt?", making Lim Soo Hyang playfully kick him.

Can you believe Lim Soo Hyang is only 23 years old (international age)?