That is naively one-sided. That is the same as a woman claiming she thought the guy was using a condom or he said he was sterile or had a vasectomy and he got her pregnant without her consent. If someone has unprotected sex, male or female, pregnancy is a possible result of that choice. If a man has unprotected sex with a female and ejaculates inside of her, he just gave consent to her possibly becoming pregnant. THAT is a biological fact.