Shadows can definitely be our friends too, I love how you wrote this though. You seem to be saying that the shadow is part of the past, but it's really not, all the shadow wants is to be it's owners friend. The second stanza talks about being there from the beginning olf birth. And since then the shadow has grown fond but the human keeps running away. Shadows only live in darkness and they are just there to protect their human. Overall, I loved this a lot. There were a lit of ways that you could have gone with this, but you give the shadow the 'spotlight' and made it a main character. You gave the shadow a sparkling and kind hearted personality despite what most people think about shadows. Great write.