Where did I go wrong?

Were did i go wrong. What did i do to deserve this kind of life? am only a teenager whose 16. You expect me to be like an adult but yet you treat me like a kid. You tell me to grow up. Drag me into whats not mine but your problem, and put it on me. I get in trouble for not liking the cloths that your girl friend gets me. You put me down for me liking something that isn't your taste. You talk smack about the women who gave birth to me. You are not my mother and will never be my mother i already have one, Who i love very much with all my heart. You can never take that away from me. I dont care that you bought me this and that. That means nothing to me. What did i ever do to deserve this pain? I hate the way you treat me.I know you don't like my mom. What did she ever do to you that made you dislike her. Nothing. You get me in trouble, you cuss me out and try to get me hit. All you wanna do is get my ass beat because you are not allowed to hit me. I got slapped because i had a photo of my mother and my dads pic together on my phone. Which wasn't even my fault. I got hit because of YOU for a stupid photo that my PHONE decided to mix it up. Yet i still get hit over it. You are not a mother, your not even a mom your a girlfriend thats what you will always be. But a girlfriend. You will never know what its like to have your own kids, you will never know the feeling on how much it hurts to not see your kids only 2xs a month for 3 hours. You will never know the pain you cause me and my real mom. And most in far most, You will never be anything but my dads girlfriend. And yet i always get the shit at the end of the stick. Cause you have a problem with my mom. You taken away everything i loved that my mom gave me. Memories everything and you don't care all you care about is only keeping what you gave me. But you don't care what she gives me cause guess what your willing to just throw it out like its a piece of garbage, You know what your full of it !all you cause me is to hate