Authentic crying might be a new term for you, I know it was for me. But don't judge until you have read the rest of this post.
I remember distinctly several good cries I had that were unexpected. I will share one. It was three years after my father had died suddenly at the age of 59. I was at my cousin's wedding surrounded by family. It was a happy occasion. The master of ceremonies was my dad's best friend. Before he began he said something nice about my dad and how he would have loved to have been there for this special occasion. My tears began. I thought I could just wipe them away, but no, they would not stop. I quietly inched my way backwards out of the crowded room and went off to have a good, unexpected cry. The tears would not stop for long time. I was totally overwhelmed with grief as though my Dad had just died.
I was not in control of those tears. They were in control of me. But if they were there, I guess they had to come out right? Once I stopped, I stopped, I was finished crying and able to take part in the happy event once again.