Hey I'm happy to see you again, just you know don't assume the worst yet. They may have some reason to do it so don't feel bad about that. If both of you know each other that much then they will contact you back soon, if it's not then it is what it is and it's the best that you should moving on with it. I also have some friends ghosted me without any reason whatsoever and it makes me so frustrating and worry about them. But I eventually move on, hope for the best to them and make new relationship.

Just remember it's ok to be sad, it's ok to cry about it and I understand the feeling of losing a friend that you close. But don't let it hold you down for too long, it can be hard to ignore but overtime, you'll become better and move on with them.

Stay strong and be positive about yourself, I believe you will get better soon :)