YOU SAID:
I've never known a love like this.
INTO JAPANESE
こんな愛を私は今まで知りませんでした。
BACK INTO ENGLISH
I've never known love like this before.
INTO JAPANESE
こんな愛を今まで知りませんでした。
BACK INTO ENGLISH
I've never known love like this before.
That didn't even make that much sense in English.