Fake Marriage with My CEO Bestie

Si-Ah has no idea that her childhood friend Jun-Woo has been in love with her all his life. So when Si-Ah approaches Jun-Woo to propose a contract marriage to fool her parents, he jumps at the chance. Even though they try to keep things platonic, the more time they spend together, the more uncertain their relationship becomes.Why do you have to keep kissing me? And why am I starting to like it?