I am sorry that you have suffered the same.
I spent my 50th this past September with axbf. I had no verbal "happy birthday"...... nothing. I did get "I spent my 50th with the shades drawn by myself" from him the next day.
All that I requested was a letter or a note. I got nothing. I am still broken and trying to recover from the hell that I lived for those 6 months. I walked away a couple of months ago.
Yes, 50 is just a number, but I never imagined THIS for my future.