Baby’s Father hasn’t paid but $30.00 in medical expenses since birth…what can I do?

I am a single mother that is living with her partner (baby’s dad). We argue a lot about expences. He pays the house payment -$1,000, lights-$120 and all his bills. I pay my bills-$1,000, cable/phone/internet-$165 groceries-$500/mo, child’s needs (diapers, food, clothes, toys) child’s insurance-$200/mo, child’s copays for Dr visits, any meds she’s needed, premium for child’s life insurance, child’s hospital bill from birth, my hospital bill from the birth. I paid for all pre-delivery bills from my OBGYN including my delivery (c-section) bill. I put $50/mo in her savings account then after I save a bunch I withdraw it and purchase savings bonds. Since she was born, he has paid only 1 – $20 copay and 1 – $10 prescription for her. To him, his money is his and he can do what he wants to with it…plus again he thinks because he pays the house payment he pays enough. I told him if we left I would still be her financial supporter 100% b/c he doesn’t do anything. What do I do?
I guess what I’m wondering is how do I make him see he is responsible for half of her expenses? How do I get him to be less selfish? When I brought it up this morning I got a sarcastic answer of , “I’ll just pay off all her bills then I’ll be broke like you.” HELLO!!! I stay broke because I pay for everything for our child!
When I say broke, I mean I have enough to finish out the rest of the month – I’m a teacher and only get paid once a month at the end of the month – but I don’t have extra to do things for me. Prime example..he’s getting ready to go out of town with a buddy for the weekend where he’ll spend 300 – 600 bucks, yet I’m here footing the bills.

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