YOU SAID:

have you ever even did something that you didn't know you regretted

INTO JAPANESE

あなたは今までにも後悔したことは知らなかった何をか

BACK INTO ENGLISH

Do you ever regret what you didn't do

INTO JAPANESE

あなたがしなかったことを後悔して

BACK INTO ENGLISH

I regret that you did not

INTO JAPANESE

私はしなかったことを後悔します。

BACK INTO ENGLISH

I did not regret it.

INTO JAPANESE

私はそれを後悔しません。

BACK INTO ENGLISH

I do not regret it.

INTO JAPANESE

後悔はしていない。

BACK INTO ENGLISH

I do not regret it.