Am I being petty? This might be long so as not to drip feed. Apologies if there's a lot of irrelevant info.
We are pretty poor. There's no getting away from that. We work bloody hard to get into a better financial position but it's a long way off.
We have separate accounts and a joint for bills. I don't really have anything coming out of my account but had never got round to having salary/tax credits paid into joint.
I ensure all the bills are paid. DH would have no idea what we pay/how much etc. I've tried to get him to be more involved/take responsibility but it falls to me. Even the "if I died you'd have no idea how to pay the rent" doesn't work.
Every month I pretty much put whole salary into joint account. Dh is self employed & business whilst taking off, doesn't bring in much & can vary grately month to month so he tells me what he can afford to pay himself & therefore what to put in. 9/10 it's less than me. That's ok, I have no issue there as he's only giving what he can & is working to grow his business.
Yesterday, we went shopping. I had £48 to get what we needed, including nappies so go around adding everything up in my head. We regularly make comment on what we have left, when I say I have nothing I literally mean £0.00 in my account. All fine. Dh fully aware of exact budget.
This morning he was checking something in his account & was confused so asked me to look at laptop. On checking this I could see the balance at the top. He has over £2,300 in his PERSONAL account!!!
I get that the business needs to have money for stock/bills etc but this was his personal account.
I live to the last penny & scrimp & save. I've had to buy bread & milk in 10p and 20p pieces 
I didn't say anything & know I should have questioned him but I was so shocked and also embarrassed. He's now at work, works away for a few days at a time & I don't know how to speak to him about it. I've never been shy around money matters before because I thought we were on the same page.
Am I just naive? He def knows when I say I have nothing that I really mean it. If it wasn't much I wouldn't have thought anything but £2k!!
I feel quite betrayed.