Relationship help..Please i need help :.......(?

Im with the girl of my dreams. But i keep on hurting her unintentionally and i make promises to not hurt her ever and i keep trying my very best to not, But its just not enough.Im up Listening to Eminem when im gone. Im scared that she is going to eventually get tired of me hurting her and she is just going to leave me. I Love her with all of my heart and soul and mind and heart and every bone and cell and everything that is me. Im breaking down in tears and its one in the morning and we have had an argument. She is now thinking that if i really love her or if i think she loves me. Im just soo scared and confused and hurt. Im keeping all of my other promises except for hurting her. I know that she is the one for me and im the one for her but in order for me to be with her i just have to keep this promise. Im just madly in love and i want to keep her. I would do and give anything for this girl. She is my only true best friend and my lover and my future wife. Please just help me people of the world, Please help a loving heart.