Maybe they don't even realize what they are doing unconsciously. The PD must have obviously noticed something because they were heavily favored in terms of kiss scenes and skinship compared to the MAIN COUPLE. Even when he introduced their loveline in the BTS, he seemed kind of excited and in shipper mode LOL. And we all know that the PD is a man of details :wub: and is known for his perceptiveness. I mean I remember when I saw their first kiss scene I was so shocked. I was jumping up and down but was shocked that their first kiss scene would be so deep. And they are too real.
Sorry chingus for the long analysis. I am so addicted to this couple on and off screen. Aigoo, I was like this with Chaeki too (Moon Chae Won and Song Joong Ki). I guess the shipping mode has begun again!