Jungkook looked at you who was reading a letter in your hand. He stares at you constantly and he is always hesitant to tell you about his feelings for you. That's because the two of you were best friends since you were little, he was always doubtful and afraid that you would reject him. A second later, he realized that the letter you were reading was a love letter from someone to you.

"Who was that letter from?" Ask him casually but actually he is very jealous.