YOU SAID:

i've never known myself as well as I know myself when I'm with him

INTO JAPANESE

私は彼と一緒にいるときほど自分自身を知りませんでした

BACK INTO ENGLISH

I never knew myself as I did when I was with him

INTO JAPANESE

彼と一緒にいたときのように自分自身を知ることはありませんでした

BACK INTO ENGLISH

I never knew myself like I did when I was with him

INTO JAPANESE

私は彼と一緒にいたときのように自分自身を知りませんでした

BACK INTO ENGLISH

I didn't know myself like I did when I was with him

INTO JAPANESE

私は彼と一緒にいたときのように自分自身を知りませんでした

BACK INTO ENGLISH

I didn't know myself like I did when I was with him