['When I met my girlfriend she had a 5 year old son. We have been together for years now and I consider him as my own child.']
That is so sweet.  I really commend people who treat kids like their own, it's so important for a kid to grow up feeling like they have a lot of people in their corner.  I have a stepdaughter myself.
When I met my girlfriend she had a 5 year old son. I think of him as my very own son these days and love him dearly!