I did something horrible to my friends and it still haunts me
If it's cool with you, can you tell me what you did?
I don't want to say what I did. It really makes me feel bad to think of it and I can't understand why people still treat me as their friend afterwards
Why would you do something horrible to your friend? You shouldn't hurt anyone let alone your friend. You are lucky the person didn't break up the friendship over your actions.
I'm stupid, I know. At the time I was mad and I didn't think anything through. I wish I hadn't done it.
It was wrong to hurt your friends, but it sounds like you feel really bad about it now. Have you tried apologizing to them about your actions? You might feel better if you do.