Today you were at university. You stayed in the classroom for a while finishing some assignments and summaries of previous exams until Felix, Hyunjin's friend, approached you.

Felix: Hey Melissa... you've never said your last name out loud.

You hesitated a bit to answer but finally got the courage to answer her question

Melissa: It's "Hwang"... Hwang Melissa

Felix: Wow! I didn't know Hyunjin had a sister.

And then, Hyunjin enters the classroom: he came to see you but he heard Felix's question and wanted to butt in

"Felix... she's my wife, stop asking stupid questions..."