YOU SAID:
My wife cheated on me with my own brother!
INTO JAPANESE
私の妻は自分の兄弟と私をだましました!
BACK INTO ENGLISH
My wife cheated me with my brother!
INTO JAPANESE
妻は兄と私をだましました!
BACK INTO ENGLISH
My wife cheated me with my brother!
That didn't even make that much sense in English.