I need help... with a story

So, I was kind of wondering if somebody could help with this. I'm stuck on the entire thing. It is due on the 23rd of this month, and I keep thinking something is missing or wrong. Can someone just critic it or maybe find something off?



(story)
Regular teenagers worry about pimples, if they got their homework done on time or if their boyfriend or girlfriend is cheating on them. For my families and I, that isn’t comparable to the problems I have. For us, we have to worry more if I bite somebody, especially while in school.
I was three when Papa put me in my new mothers’ arms. My father and mother, Jade and Dustin, were finished talking to them. They knew I was half a vampire, but my adoptive mom and dad still wanted me as their son. I have two brothers now, Jepha is 16, and my older brother Chris is just a few months older than me.
Aaron, my best friend, was the only girl to know my secret. She was my friend since the day I moved to New Hampshire, she’s lived next door to us since we were four. I was originally from Russia, my mom and dad had given me up when I was three-years-old to my parents. My parents knew I was not a full human, but they didn’t care, as long as I did not bite anyone.
My natural mother and father, Mama and Papa as I like to call them, moved from Russia to Forks, Washington. They liked Aaron, my brothers already treat her like a sister and my parents love her, too. I had known at an early age that I was very protective of her, which to a vampire means I had a crush on her. I was going to tell her I liked her the night she was going to come over, the night it happened.
It was raining on Wednesday, the week before my fifteenth birthday. She and I had decided to chill out and listen to music in my room. I hadn’t eaten before, but I was fine. She was lying on my bed when I just snapped. She was lying on my bed, her brown hair was in a messy bun under her head, and her fingers were intertwined on her chest while her black socked feet were crossed at the foot of my bed.
The next thing I know, I’m on top of her and she is screaming and pushing me to get off of her. Papa was visiting from Washington at the time and he heard Aaron’s screams and rushed to my room. I felt the blood pump into her inner jugular and would have bitten in more if my dad had not rushed in and saved her. I had been rushed away by Dustin while my moms rushed Aaron to the hospital.
She had to go in for major surgery on her inner Jugular. That night I, my mom, my dad, jade and Dustin talked about what to do in the family room downstairs. As we talked I had decided to come to one conclusion; never put Aaron in this kind of danger again. My mothers and fathers all agreed; I would never be in contact with Aaron again. My dad Dustin was furious by my decision, as was my mom too. I told them I would write her a letter explaining the new rules she had to follow.
Aaron,
I’m sorry for not coming to visit on my birthday. Mom gave me the present from you, I love it! But I am sorry to tell you that this will be the last time I talk to you.
I already talked to my parents, Dustin and Jade included, and we all think that for your safety I should keep my distance from you. I know it will be hard for us, but it is for the best. You may still come over and see Jepha, Chris and the rest of the family, but I will keep in my room or upstairs, so please don’t go up there.
I was going to tell you something that night. I was going to tell you that I had a crush on you, I thought you had felt the same, but I guess now it doesn’t really matter. I will miss you; I hope you are okay with this and will one day understand my actions on this.
With Regards,
Robert
I have heard Aaron’s voice downstairs almost daily. I’d hear her voice come upstairs every once in a while, but I’d just close my door and lock it if she came up. My brothers were instructed to keep her from going near my room at all times, as well as keep her away from me at school too. And believe me they had their work cut out for them.
Papa and Mama come over a lot now. My dad and Papa have gotten a lot closer since their move from Washington.