Am I wrong for this?

I lost my job back in March and I only have $250 left in my checking. I have to pay my car insurance, gas, credit card, and I’m going to owe my parents $100/month for the next 3 months because I just found out my car needs brakes and they’re going to help me pay it with me paying them back. I don’t start work until next Monday and I literally do not have any money to spend because my first paycheck won’t be for a month (I’m lucky to still live at home while going to college). My boyfriend does not have a job or money. He wants me to buy him $5 McNuggets because he’s hungry. I already bought us both subway last night and am always buying for us. I told him I can’t and he’s getting mad saying he will pay me back. Am I wrong for not buying it?