Remember the scene in 'Discovery of Love' when Yoon Hyun Min and Kim Seul Gi confirm their feelings for each other in the park? He grabs her and kisses her after she tries to run away from embarrassment. Well, there is an interesting back story to that, which actor Yoon Hyun Min revealed on 'Radio Star' on December 17!

He revealed that the part was ad-libbed, saying, "In the script, after we confirm each other's feelings, Kim Seul Gi was supposed to run away in the scene, so I decided to do an ambush kiss.  [Afterwards,] Seul Gi dropped down to a squat."

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Indeed, if you watch the scene here, you can see that after their long kiss, she plops down in surprise and then begins to hit him while stifling her laughs before running away as scripted.  

MC Kim Gu Ra said, "Did you do an ambush kiss because it was Kim Seul Gi? I feel like it wouldn't have been easy if it were Lee Yeon Hee."

Yoon Hyun Min agreed, "I don't think it would've been easy. Seul Gi takes things well and has good sense, so I think [that helped]."