YOU SAID:
I'm not yours, nor am I anyone else's.
INTO JAPANESE
私はあなたのものでも、他の誰かのものでもありません。
BACK INTO ENGLISH
I don't belong to you or anyone else.
INTO JAPANESE
私はあなたや他の誰のものでもありません。
BACK INTO ENGLISH
I don't belong to you or anyone else.
That didn't even make that much sense in English.