译成英文：所有的爱都只是我的幻想而已

The whole love is just my fantasy.

这个“所有的爱”我觉得其实意思是“整个的爱”“我（对某人）的全部的爱”的意思吧。

All of the love is just my imagination

All my love is just fantasy.

All of the love is just my dream.

All these passion and love are merely my illusion

我觉得楼主的翻译是做好的。