YOU SAID:
i guess you never really know someone as well as you thought you did
INTO JAPANESE
私はあなたが本当に誰かを知っていなかったと思います
BACK INTO ENGLISH
I think you didn't really know anyone
INTO JAPANESE
あなたは本当に誰も知らなかったと思う
BACK INTO ENGLISH
I think you really didn't know anyone
INTO JAPANESE
あなたは本当に誰も知らなかったと思う
BACK INTO ENGLISH
I think you really didn't know anyone
You've done this before, haven't you.