YOU SAID:
knowing well , she was a killer , he still loved her deep.
INTO JAPANESE
よく知っている、彼女は殺人者だった、彼はまだ彼女を深く愛していた.
BACK INTO ENGLISH
I know she was a murderer, and he still loved her deeply.
INTO JAPANESE
私は彼女が殺人者だったことを知っています、そして彼はまだ彼女を深く愛していました.
BACK INTO ENGLISH
I know she was a murderer, and he still loved her deeply.
That didn't even make that much sense in English.