A couple had been married for a few years and they were unable to have children. The man decides to have his sperm frozen for future use. The couple breaks up and the now ex wife goes to the fertility clinic, and by forging her husbands signature, the wife is then inpregnated with his sperm and gets pregnant. She has now given birth to the child and is now suing the husband for child support. He is of course fighting it because she used his sperm without his permission.
Should the husband be required to pay?