In Alabama a man was forced to pay child support to a woman who raped him and in Kentucky a 14 year old was forced to pay child support to his rapist even though the state didn't prosecute the woman for statutory rape.
So yeah, it happens. Got to love our legal system. Imagine the shit storm if a 34 year old man raped a 15 year old girl. I bet she wouldn't be paying him money for 18 years.