I adored my father but when he died, I never shed a tear for him and never have since. I don’t know why. He was my rock growing up as I had a difficult relationship with my mother, but I always felt that somehow, wherever he was, he was okay and from then on, so was I.
When DH, the great love of my life, died four years ago I was pretty dry eyed then too and felt I was somehow letting him down because there was no great outpouring of grief, but I think you’ll find that in its own good time you will experience it - just not when you expect it, because by and large, it doesn’t happen like that. Please beat yourself up. You loved him - still love him - and he loved you. Take comfort in that. Sometimes we just have to give ourselves time and space.