I have never heard of this issue exactly. But its a bit comical because I just started a thread (new member so won't be up for a while) about being afraid to cry. Comical in an endearing, comforting way.

I am afraid to cry because I do NOT want to feel these feelings (going through break-up).
It will probably happen at some point if and when I am unable to send the feelings to hell and be done with them.

The emotional pain you have when a crying spell comes on; would it help if I suggested that you say, "no" loudly to any strong and unrelated emotions? By unrelated I mean something other than the true reason you're crying at that very moment.

My heart goes out to you in your time of pain.