Lost my best friend

I am so hurt over everything. My best friend and I came to blows and there’s no going back. She got upset with me because she lives in Ohio and wants to move her family in my loft. I told her she couldn’t because the space is too small. She unfriended me and blocked me across all social media platforms. I’m so fucking crushed and hurt. She was my only best friend and now I have no one. I’ve never felt so alone. Truly, truly crushed. I think I’ve cried over this more than my first break up. 20 years gone. She’s gone. My heart is broken. How can you turn your back on 20 years? No words will ever express the hurt I’m going through.