Household finances don't have to be completely shared but honesty is still important.
Well said. It's not healthy to commit to a long-term relationship without knowing about each other's financial position. That includes before you decide to marry, or to raise a child together, or to do anything where either one of you makes a serious financial decision for each other's sake or for the couple's sake. All of those are long-term commitments.
DH and I each have some separate savings which either of us we could have used as a "running away fund" if we'd needed to. We know roughly how much each other have and when there's a money problem then our separate savings can be part of the conversation. If either of us started keeping financial secrets, or if I started feeling the need to keep money secret from DH (which I could do if I had to), that would be both a protection and a sign of something going wrong.
It sounds as if you haven't had that converation about your financial positions yet and it's time to have it. You can judge how your relationship is going and how committed he really is by whether he decides to tell you or not and by what he says about it.
I've been with my husband 6 years married 3.5 and we still keep separate finances. He pays the mortgage, I pay the utilities and we then do as we please with what we have left of our salaries. I don't ask about his, he doesn't ask about mine, we are both comfortably off so why should it matter what the other has saved.
Because what if something changed and after a while you weren't both so comfortably off that it didn't matter? What you have is only fair-weather marriage.