@theologypoet I think the best option here is you keep separate accounts and then each put a certain amount per month into a joint account to use for joint expenses. Ie if your total expenses are about 4k per month, then you should each contribute 2k into the joint account.
This is what my husband and I did when initially married, before we bought our house. When we bought our house and got pregnant, he was being paid weekly and I was getting paid monthly, so it was just easier to dump all our money into joint accounts (his salary technically covers day to day costs while I use mine for house updates or to build our savings etc)
However, I think your partner is being silly because he never had a problem with using your money that you earned. And it's definitely more of a relationship discussion than strictly financial, especially since a lot of relationship issues start with financial disagreements.
Specifically, what does he think he's going to do with 30k per year? Take solo holidays and leave you alone? It seems there is more going on and it isn't fair to you.