Actually, there's really no need for explanation for that. Their plan is plainly just for the plot to get the actors "get kipnapped". The flow of that scene just lack a bit of reasoning and made it too obvious. Anyway, it doesn't really bother me cause I like this drama and I've been rewatching it for several times already. I/Us (audience/s) wondering on how things happen is just part of my/our curiosity and showing interest on the flow of what we're watching. I'm gonna edit it and put an emoticon cause it sounds too serious when you read it. 😆😆😆
He was so clueless at first then pissed off. But 9nce he sew the love of his life all that pissed off just disappear so fast. His heart was beating fast once he saw her...