YOU SAID:

I can’t believe I’ve seen you all day long until you had to leave

INTO JAPANESE

あなたが出なければならないまで、一日中あなたを見たことが信じられない

BACK INTO ENGLISH

I can not believe I saw you all day until you have to leave

INTO JAPANESE

あなたが一日中あなたを見たのは、あなたが去るまで信じられない

BACK INTO ENGLISH

I can not believe you saw you all day long until you left

INTO JAPANESE

あなたが一日中あなたを見たとは思っていません。

BACK INTO ENGLISH

I do not think you saw you all day.

INTO JAPANESE

私はあなたが一日中あなたを見たとは思わない。

BACK INTO ENGLISH

I do not think you saw you all day.