Financially overwhelmed

So I’ve been with my fiancé 4 years now. We both spend money on each other but me more than him. He isn’t afraid to tell me if he wants me to buy him something, which is usually expensive, whereas I don’t want to do that. I wasn’t raised doing that. If you want something, you work and get it yourself. Anyways since living together, I have been the one pulling out my wallet to pay for things. Gas, take out, groceries, etc. He doesn’t pay for anything (besides rent). He claims he doesn’t have any money. He does pay $1,000 for the room we’re renting and we’re due to move soon. I would be the one paying the first & last months rent, and the brokers fee. I would most likely be the one paying for furniture. It’s come to a point where he just takes my card out of my wallet to use and tells me he took it. He asks me to order stuff for his fish tank. The other night we ordered AppleBees and I thought it was just for us but he ordered for our roommates as well. $100 worth of food when we could’ve went out to eat and paid for the experience, a date. I suggested that to him and he said no. I’m just feeling like a bank. The groceries I understand!! But gas for a car that’s not mine and that I don’t use, take out food for other people when I already paid for groceries, random things for like his fish tank. I’m just worried that when we move out, the rent will be completely on me, among all the other bills, even though we agreed to go half and half. And he does work (he’s a delivery driver) but sometimes he’d take a week off or two weeks and I have no idea why. But he’s supposed to be making around $1,000 a week (off the books) so he SHOULD have money. I’m just not understanding.