YOU SAID:
i can't believe you just did that
INTO JAPANESE
あなたがそんなことをしたなんて信じられない
BACK INTO ENGLISH
i can't believe you did that
INTO JAPANESE
あなたがそんなことをしたなんて信じられない
BACK INTO ENGLISH
i can't believe you did that
That didn't even make that much sense in English.