Ты прекрасен, за кадром :D(Jang geun suk and park shin hye)

When I saw this video, I wondered what was happening exactly. I’ll let you think about it !!!: was it a joke, just helping her to get the right emotion? or was it for real and she really stopped him? please tell me what you think about it. Thank you for replying. I’ll translate the French sub: JGS: do you like (love?) me? PSH: lawing JGS: really? PSH: oppa !!!! JGS:why are you so nervous? ya what’s the problem? look at me. My original question.... do you like (love?) me?