I still remember five years ago when I first came to this school. I felt very lonely because I had few friends. One day, a girl called Nina came into my life. She was friendly and kind. She told me to talk with others often and make some new friends. Wher help, I changed a lot and became active and outgoing. But last week, I had a pwith her . She told me that she wasn't rfor the English exam , so she wanted to copy my answers. I rto do so and she was really mad at me. I promised her after the exam that I could help her with English , but she didn't listen. She said that our fcame to an end. I don't want to lose my best friend . I really don't know how to deal with it. Who can help me?