Life isnt fair.
You dont compound one wrong with another. No man should be forced by the government to raise another man's child.
The woman who committed the fraud should be charged with the expense of finding the real father, who should be paying instead of the duped man.
However, if women didnt have the Courts to depend on in these cases, they might think twice about becoming pregnant or sleeping around in the first place.
I know ---it's sort of like the forced welfare/charity programs we have ---the government only promotes fraud and irresponsibility when it forces one group to provide for another group with the second group not to be held accountable in any way. The Constitution never gave the government this kind of control over our lives.