This is so awful I’m so sorry I don’t know the situation at all so admittedly can’t say much, but this sounds like a really to be blunt scumbag thing to do. I don’t believe you’re over reacting I’d freak out too if something like this happened too me. I also don’t think you’re an unlikable person from what I’ve seen of you, you’ve always been kind. Sorry if this comment isn’t all that helpful. I know we don’t share much stuff in common or know each other at all, but if you need someone to talk to just to hang out with or anything I’m available

Sometimes unfortunately people can end up in fake friend groups I’ve had experiences with before, but all of that for me was years ago and since then I’ve found real friends I hope you can find a more genuine friend group as well sometimes it can take awhile to find a group you fit in with, but that doesn’t mean anything bad about you as a person