楼主的这个句子有误，正确表达应该是：I just want you to stay with me. 句子意思是：我只想要你和我在一起。
说明：
一、want sb to do sth 意思是“想要某人去做某事”，want后面的动词要用不定式形式。例如：
My mother wants me to go shopping with her. 我妈妈想要我和她一起去购物。
二、stay with 有如下意思：
和…住在一起；在…家里做客
I'm going to stay with my brother in his house near the sea.
我打算到海滨我哥哥家里去做客。
把…坚持(或继续)下去
The plan with which we've stayed has been replaced by a new one.
我们一直坚持执行的计划现在已被一项新计划所取代。
耐着性子听(某人)讲下去
Just stay with me a minute longer, my followers. No man will dare to bully you under my protection.
耐心听我说吧，我的教民们!今后，在我的庇护下，没有人胆敢欺侮你们。
跟着…不离开；与…并驾齐驱
He always stays with his mother wherever his mother goes.
无论他妈妈走到哪儿，他总是跟在她的屁股后面。
词态或句型有错误没？
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