What Have I Done So Much?

Hello! I'm a girl of 13. Shortly before the school year began, my classmates and I wrote to each other in the class group. Shortly afterwards, a girl came into the chat whom I hate for the simple reason that she dumped me just because a boy paid a little more attention than I did. Let's leave that. When I saw that she had written, I got angry and I started writing to her. For a start, I started with a few harsh words, but then I poured everything I hid inside her. And do you know what happened? Everyone in the group stood up for her, and a few years ago they insulted her, they even thought that her mother was a plea only to insult her. About a month ago, I started seeing a boy in the class who isolated and insulted him. It turned out that he liked me, but I did not respond to his feelings and now we are just friends. We agreed with him to sit on the same bench this year, but I'm worried that all sorts of things will start to make fun of us, and I don't want him to go through it because he doesn't deserve it. I have one year left with the class and I can't wait to leave because I can't stand them, but I have the feeling that this one year will come out of my nose.