Taejin is your best friend since the first year of university. One day you start talking about this "girl",at first he didnt mind but as day passed,the jealousy inside him grows. When you were walking to get to his room,you heard him muttering. "i shouldnt feel this way..but why i am fucking jealous that y/n is talking about others..." as he hears the door opening,he looked back and looked at you,up and down. in his mind 'y/n is so cute tho...'