I don't think you're paranoid, but I do think you're way, way, way too hard on your friends. It simply is not that big a deal, and if you say someone really isn't your friend because of something like this, well, I'm glad I don't have friends who judge me so harshly, and get mad at me so easily.

We all make mistakes. Our friends make mistakes. Our friends use bad judgment. Our friends forget things we think they should remember. And so do we.