I am sorry for your bad news! Were you allone crying? I can't cry allone,it just feels weird. Maybe you need somebody who understands you, hugs you that you can let go. Somebody who helps you to get up after crying.

I didn't get you wrong, it was just my explanation that was unclear.
I just can talk about myself an my experiences with tears, my own and tears of other people I witnessed crying.
Sometimes you undergo something very bad, you feel sad inside, maybe empty and you can't express the feelings. It is closed in, you feel it is bad but you can't change it. Maybe you dislike yourself for the subject you would like to cry about. You feel dull, heavy and it just doesn't come out.
It is only theory: you have to be ready to cry, ready to feel the pain and the sadness inside you. You must let go. Sometimes music helps, shouting, hitting a pillow... Often it helps to talk to somebody, a good friend, collegue... I am more willing to let go when I have somebody who takes care of me, holds me and comforts me. I am afraid of crying allone because it goes on and on and I can't stop anymore and afterwards I feel drained. The crying doesn't feel "positive". I think that even crying should have a positive aspect not only the empty feeling afterwards. Some call it a catharsis, I wouldn't put it that way but the positive aspect is definitely something I expect from crying.
 

I tend to find it a whole load more difficult to stop crying once that first tear has left my eye. Even if I have tears in my eyes I can, if I try really hard pull it back if I don't want to cry. I need to stop talking to make it work.

But once I shed a tear that's it generally - more will almost certainly follow.

P.S. Apologies for my absence recently - mega busy with work and my college course.