Oh I empathize with this one. I had a high school best friend I did everything with. We didn't have to tell anyone we were best friends it was so obvious to all. I went away to college and we tried to keep in touch but it wasn't the same. The last time I talked to her was when I invited her to my wedding reception. She promised to come and then didn't show. I wonder where she is now. I can't find her on social media or anything.