You're friends and Junhui has a crush on you, but he never told you anything because he's afraid of ruining your friendship.

You were talking normally until you said that you had learned a greeting in Chinese. Since Jun is Chinese, he was curious to see the greeting you had learned, but what ended up surprising him was that you accidentally ended up saying "I love you" in his native language instead of a greeting, but deep down he knew you didn't mean it...