Sharing our money

So my boyfriend of two years and I have been living together for about a year now. I’m so sick and tired of paying for groceries, paying for his phone bill when he can’t do it, giving him gas money, buying him snacks, but then when I ask for him to buy me a box of brownie mix ($1.26) he asks where my money is. HE MAKES 4 TIMES WHAT I DO!?! Am I just over reacting? He says he wants to have joint funds but wtf. He’ll buy whatever he wants but if I ask him to buy me something he asks when I can pay him back. Someone give me some advice please!😭