because my spending is very clear and simple.
I suggested him to put all his income into our account, and then withdraw for each transactions, so I can tell how exactly he spends, but he refused because he feels controlled too much.
I can see his credit card, his individual bank account.
We have a investment account 60k. He set it up in his name a few years ago. The money is saved by both of us. I was stupid and neven think about it. Recently, I asked him to change it into joint account, he felt hesitated. He said "you think too much. I never try to cheat you on this." I said "if that is the case, can we change it into my name solely". He said "If you do it that way, that means you don't trust me, we should divorce if there is no trust. When I started this account without your name, I was so innocent because I didn't think about this issue, so I am innocent. But you intentionally try to put your name solely. That is the difference." Anyway, he agreed to change the account into joint.
Now he thinks that we roughly contribute equally to our small family.