YOU SAID:

i can not believe you would do that

INTO JAPANESE

私はあなたがそれを行うとは信じられない

BACK INTO ENGLISH

I can't believe you do it

INTO JAPANESE

- 思い切ったわね

BACK INTO ENGLISH

I can't believe you did it.

INTO JAPANESE

- 思い切ったわね

BACK INTO ENGLISH

I can't believe you did it.