Boy in my class was a psychopath

Back when I was around 7 or 8 we moved to a new town and started going to a new school. There was this one boy in my class who was always really nice to me, like the whole class was, but he took an unusual interest in me. <br>He would always want to be partners with me, sit with me at lunch, and would always follow me around. He was taller and bigger than me, but he looked younger than me too. At first I didn’t mind, but it started to get on my nerves. <br>I told him to leave me alone and I stopped playing with him, but he would still sit with me at lunch and walk home with me. I didn’t tell the teachers cause I didn’t want him to get in trouble.<br>One time when we were walking home, he asked me things like; "what would you do if I pushed you under a car?" "What would you do if I slit your throat?" And a bunch of other things like that. He was just curious, and I assumed he wasn’t serious, but I still was like, "uh, what? Why would I ever do that"<br>Then he told me he had burned a pet alive, slit his brothers throat, and killed a bunch of cats and dogs. I knew he was lying about the pets cause cats and dogs don’t just disappear, and I assumed the rest was a lie too. Again, I didn’t want to get him in trouble, so I didn’t tell anyone.<br>Then he started getting violent and would push me and shove me around. I started sitting by different people at lunch, and my parents made me stay after school with a teacher so he couldn’t walk home with me. <br>My parents also made arrangements for me to carpool with this girl in my class, and I told her how I felt uncomfortable and she said to just ignore him and he would leave me alone.<br>Then one day we had a school play, and when I was singing this song by myself on stage, I saw him in the audience with a huge smile on his face. I looked at my friend next to me and she too noticed him smiling. She asked me if I knew him, and I lied and said no. At the end of the play, when everyone was leaving, he came running over to us and had a pissed off face and said "you can’t ignore me, I can do whatever I want to you!" <br>I told my mom and she told the school, and they told his mom and had a meeting where they watched him talk to a counselor and they decided he wasn’t a threat. They said he was really smart and knew how to act normal on the outside. I was like, "what? No, he’s crazy!" And they said I had to let him in my class and I had to let him go to school with me on my carpool.<br>Then one day, when I was over my carpool girls house, her mom was talking about this woman who had gone missing. She was a substitute teacher at our school and she had been missing for a few weeks. I didn’t think much of it, but that night I had a bad feeling about that teacher. Then the next morning I got woken up to the sound of sirens. I was confused, but my mom said it was for that teacher. She had been taken from her house by a man with a gun, and he had shot her three times in the head. <br>I knew it was him. I knew he did it. I didn’t even need proof, I just knew. And two days later, when they announced her murder had been solved, I knew it was him. I woke up to my mom crying in the living room and I walked into the kitchen where my dad was reading the newspaper. <br>He told me I was right, he had done it. I felt guilty, I felt like I should have warned her. I started crying and my dad hugged me. I was so overwhelmed, I had lost so much. I had a great friend with the carpool girl, I had a family and a home, I had a normal school and education. But now it all felt different. <br>I felt sick, like all the blood in my body had been drained and replaced with poison. I never got over it. I never get over the thought that I could have saved her. She was a great teacher, she was so nice and cared about everyone. And I let her die.<br>I never will forgive myself for letting her die. I never will forgive him for taking her from me. <br><br>Edit: I made a typo, I was 13 at the time not 7 or 8