I know you already have much to think about from the other responses but I thought approaching your question from a different tack might be helpful.
Dreams are more often symbolic than prophetic. By this, I mean that it is rare that life unfolds as it does in our dreams. I do believe that dreams are important communications from our subconscious and the language of the subconscious is symbols.
Although there are symbols shared by and across cultures (Jung called these "archetypes"), I've found that dream symbols tend to be much more personal. Which is great, because you are living with the world's foremost expert in your dream symbols. (Meaning you!)
My suggestion would be to write down your dreams in as great detail as you can remember them as soon as you wake up. (This last bit is important as we tend to rewrite--or forget altogether--our dreams as we become fully conscious.) Leave the right-half of your page(s) blank as you record your dream. (More on this later.)
Sometime later (I like to get a bit of distance from the recording process), get as quiet, centered and open as you can and, as you reread what you've written, jot what comes into your mind in the blank half of the sheet. (The first thoughts are key.)
For me, I could imagine that the loss of your girl could represent something that I held dear, perhaps indicated by clothing or a piece of jewelry. Say, for me, if she was dressed like a medieval princess, she might represent to me that I was "losing" my out-dated notions of romantic love. Perhaps the rest of my dream might indicate to me how I was replacing those notions.
I hope this helps.