I'm breaking up with my girlfriend over this

I (24m) have been with my girlfriend (24f) for about 5 years.<br><br>Each time we've moved or relocated, we have split the costs. When we moved in with her parents, we split the costs and paid 50% each. When we moved in with my parents, we split the costs and paid 50% each. When we moved to our own apartment, we split the costs and paid 50% each. <br><br>I have had a student loan since I graduated college. She doesn't have one. I have a car payment for a car I bought for us to drive. She doesn't have one. I pay about $100 a month for our cell phone bills. She pays $30 a month for her phone bill. I pay about $100 a month for our insurance. She pays $50 a month for her insurance. I make more money than she does. I pay more money for our things than she does.<br><br>She insists that we should split the bills 50/50, but the student loan, car payment, phone bills, and insurance costs should be my responsibility. She thinks that I should pay 100% of my student loan, car payment, phone bills, and insurance. She thinks that I should only pay 50% of the bills. She thinks that she should pay 0% of my student loan, car payment, phone bills, and insurance.<br><br>I believe that I should pay 50% of all of our expenses, including the student loan, car payment, phone bills, and insurance.<br><br>She says that I am being selfish and greedy for not taking on the bulk of the expenses, and that I am not a good boyfriend for not sacrificing everything for her. I think that I am being generous and thoughtful for not trying to get out of paying for my student loan, car payment, phone bills, and insurance.<br><br>So we're breaking up.