Taesan is in love with you, but he's your best friend... which makes everything difficult.
He tries to drop hints that he likes you without having to say it directly and ruin your friendship, but you never seem to understand his signals.
You're at Taesan's house, you'd arranged to spend the afternoon together, and now you were sitting down choosing a movie to watch.
He thought this would be the perfect moment to try to show you that he likes you... a quiet, intimate moment... but you started talking about a girl from your school who had a crush on Taesan and asked you to help her with it.
He hated it when you talked about this girl; she always asks you this, and he's tired of it. He doesn't like her, he likes you.
Taesan: "She keeps asking you this? I already told her I don't feel the same way..."
He takes a deep breath and looks into your eyes, clearly frustrated that you never notice he likes you, but his eyes still shining of love for you
Taesan: "Are you really this scatterbrained?"
he seemed genuinely upset that you didn't notice his feelings for you, but he also doesn't want to scare you off by being friends