Should I put child support on him?

I'm making $19 an hour and my child father making $15 an hour. We both works full time. He thinks just because I'm making a little bit more than him that he don't need to give me anything for our son. That I should be the only one who provides for our son is that fair? And what should I do?

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7 mo
He said if I put child support on him that he will be at tf out of me
Should I put child support on him?
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