AITA for cutting my friend off without letting them know why they are being cutting off
I'm currently 17 in my junior year of high school yet I still look back on the awful situation that has unfolded over the past 2-3 years. For context, I had developed a crush on some popular guy at my school freshmen year.We'll just call him J. It was more of a limerence and half way through the year, I got the ick from his behavior and lost feelings completely. It was a completely weird situation because we never really talked. Yet I had such a huge crush on him. Well anyways, during the time I had this crush, I told a couple of my friends including the girl we will call K. All I asked was that they didn't share this secret outside our circle because 1. I knew if anything was said, it would end horribly and 2. I couldn't be anymore embarrassed about the situation in the first place. They all agreed. Fast forward to my sophomore year, K and I's friendship shifted. For one, she would share some of my private information to the people who I had issues with. I confronted her about this issue, but she just brushed it off. In November or December of that year, I vividly remember her telling J's friend that I had a crush on him at some point in Spanish class while I was across the room. She genuinely thought that it was okay to share that, but I was genuinely embarrassed.
Remember how I said that I didn't want this secret to be shared because I knew something bad would happen. Well, for the rest of my sophomore year, J and his many friends(because he is super popular for whatever reason), proceeded to bully me. They "slutshamed" me and made really nasty comments about me. They genuinely made the school environment super toxic for me and while this was happening, K didn't speak up for me. She instead decided to keep adding fuel to the fire. Ever since the day that she shared that secret we haven't talked and J has now transferred to a different school. The shaming is more passive now but the entire situation has seriously added to my already growing anxiety and depression.
I can't help but wonder, AITA for not directly telling K why I didn't want to be friends anymore? Is my anger misguided at the wrong people?