"Am I the only person who tells people when they have a problem? Am I the only one who wants people to just spit it out?"

Nope, you're not the only one. I think that's the case for a lot of us borderline folk tbh, and I am definitely one of those. I don't understand hints 95% of the time, I will either get it wrong or not understand something is missing, so it frustrates me and the other person when I'm not getting it. I also lack the ability to just hint at things, and because people are so used to hints from "normal" people it can cause issues when I'm seen as "blunt" (I try my best not to be rude though).

As for the change in friends, I experienced similar, but people don't come back as rapidly for me anymore, and even when they did it was all online - no IRL friends since high school. I've just gotten sick of trying when they're all going to leave anyways. My fear of abandonment has taken such a strong hold on me lately, I just can't deal with people coming and going.