그런 얘기를

that kind of thing

→ 그렇다
phrase Rare #19,838
that kind of thing Refers to something said or talked about; 를 marks it as the object of the sentence.
KO: 그런 얘기를 다시 하고 싶지 않아요.
EN: I don’t want to talk about that kind of thing again.

오늘 같이 좋은 날 왜 그런 얘기를 하나요?

Why are you talking about that on a nice day like today?

— 너자 (2019)

왜 그런 얘기를 한 거 죠?

Why did you say that?

— 콘클라베 (2024)

그런 얘기를 해서 미안해요

I'm sorry for saying that.

— 맨 프럼 어스 (2007)