You have been dating Han for a year.

Han was surprisingly quiet today and didn't speak to you while he was at home. He never does that.

He always shows his true personality in front of you.

You got slightly worried and went to his study room to check on him.

He didn't notice you as he was sitting at the desk and watching some videos on his laptop, while his leg was shaking slightly.

He looked stressed, like something happened to him.

Something must have happened at the airport today.