Despite being enemies, you and Yoonsik were dating for the sake of getting revenge. To get revenge on both your exes who left and started dating one another.

Yoonsik and you are in a reality tv show for the revenge and the grand prize.

You were in the kitchen making coffee with his ex, who unfortunately bumped into you and dropped the coffee on your foot.

Yoonsik knew he fucked up when he grabbed his ex to get her out of the way. He knew he had to get his mind straight.