I don't understand.
What are your conflicts about money?
Does he not allow you to spend where you want to?
Does he spend it frivolously (in your opinion)?
Sit down and discuss a budget for you. Suggest the things he spends frivolously on may not be well thought out expenditure, explain why in your opinion this is so.
However, you have to remember he earns the money, if he allows you unfettered expenditure, than be very gentle and diplomatic in telling him you think his own expenditure is frivolous, otherwise you're asking for a world of trouble.
We grew up incredibly poor, no toys, no new clothes, hand me downs from better off relatives, or mum would sew us outfits, our food budget would be accounted for within the penny, my mother once had her purse stolen, luckily it was after she had done the grocery shop, the thief dropped her purse just yards from her in disgust when he realised the purse was completely empty!
Alhumdulillah, for humble beginnings, I find charitable donations to be incumbent upon me, my reasoning, if I'm making the donations, that part of my income was clearly never mine anyway. I want to die before money becomes the be all for me.
As an accountant I would never ever spend on a credit card if I could not repay the balance on a monthly basis, and sorry but good lord $300 for baby furniture, the lady was out of her mind, we only buy the crib, children grow up so fast they do not need dinky wardrobes (which wouldn't fit all the baby paraphernalia anyway). I used washable nappies too, and am now looking to give them to a charity which will benefit, as they're clean and white as the day I bought them, and could benefit at least two/three more babies if not more!