Under
CloUdiSm theory - this the worst form of relationship between a man
and woman, a blanket of cover in between you. As a bf, if you are
unable to make your gf feel comfortable to speak about issues
relating to your relationship (please note only relating to your
relationship and affecting it, nothing to do with past and other
irrelevant subjects) - its kinda sad and failure on your part. (in
most cases, both parts) Yes, not everything must be told. (Past for
example), but issues that is currently affecting the
relationship must be discussed and solved or at least even
if it were to end, it will be a conclusion laid down by TWO
parties.
She won't tell you a thing? So you are going to leave it as it is?
Attempt countless times and ASK TO MEET HER. Prepare a speech and
seek to understand why your relationship is falling apart.
Of course if you are simply lazy, dump the relationship then. In
this case, you save your effort, don't need to know the reason why
and probably achieve what she wanna achieve. But if I was you, I
will do exactly what I said above. 
P.S: Is she a Cancer?
Cheers
