English Grammar Help

What is the meaning of these two sentences below??

You belong to me. = You are mine.
You belong with me.= We should stick together.

You belong with me.You should be with me. You cannot leave me.

Examples:
Peter: You belong to me.( You are my girl only.) You cannot go out with any other boys.
Helen: I know that. I love you, Peter.

Peter: You belong with me. (You should stay with me forever.)
Helen: I will never leave you, Peter. I will just go anywhere you go, sweetie.



圖片參考：http://l.yimg.com/f/i/tw/ugc/rte/smiley_1.gif

1) you are mine . People understand what you mean but we seldom say you belong to me. Simply use - you are mine- is more straight forward.
However, we normally use belong for owning an item, The book/ the car/ the handbag belongs to me .
2) It does not sound right. Nobody says so.
You better let us know what you want to say and we translate it for you.

belong to had two meaning:
ph.

1. (在所有權等方面)屬於
The bicycle belongs to Amy.
這腳踏車是艾咪的。
2. 是...的成員
What political party does he belong to?
他是哪個政黨的成員?