You may be in shock, or...maybe you’re quietly relieved?
I am sorry for your loss ( death of a marriage). I know what you mean about not crying. I feel like if i get a good loud messy cry, i will feel better. But the tears wont come.
Hang in there, im with you in common grief and emotional turmoil.
Maybe it hasn't set in or maybe all that time you spent working just means you didn't have the same amount of love or commitment to him? Or maybe you were avoiding him because you knew your heart wasn't in it?
I also think that it's shock. Amateur author Dorian Wright describes similar feelings in their book "20 Years Gone: A Divorce Story" (avail at Google Books and Amazon).
Sadly, after that much time passes with someone, you don't really expect that bond to change. So, when it actually does, it kind of blows your legs out. Wright even compares it to being like PTSD (when actually, it really is).