Long story short, I had a friend for 12 years since our kids were little. We were both going through a really hard time at the same time. I confided in her as one of my closest friends. This turned out to be a massive mistake and she launched into a nasty attack on my character and how selfish I’d been over last 12 months. It is genuinely the nastiest encounter I have ever had. We no longer speak. I have lovely friends - some new and some existing but all my interactions are very surface level and I don’t feel safe to open up about anything to anyone. How do I get past this? I trust no one.