YOU SAID:
you are the last man in the world i could ever be prevailed upon to marry
INTO JAPANESE
あなたは私が結婚することができる世界で最後の男です
BACK INTO ENGLISH
You are the last man in the world where i can get married
INTO JAPANESE
あなたは私が結婚できる世界で最後の男です
BACK INTO ENGLISH
You are the last man in the world I can marry
INTO JAPANESE
あなたは私が結婚できる世界で最後の男です
BACK INTO ENGLISH
You are the last man in the world I can marry
That didn't even make that much sense in English.