YOU SAID:

I walked away from my wife

INTO JAPANESE

私は妻から離れました

BACK INTO ENGLISH

I left my wife

INTO JAPANESE

私は妻と別れました

BACK INTO ENGLISH

I broke up with my wife

INTO JAPANESE

妻と別れた

BACK INTO ENGLISH

Separated from his wife

INTO JAPANESE

妻と別居

BACK INTO ENGLISH

Separation from his wife

INTO JAPANESE

妻との別居

BACK INTO ENGLISH

Separation from his wife