The Catholic Church requires a dispensation for mixed marriages. The Catholic partys ordinary (typically a bishop) has the authority to grant them. The baptized non-Catholic partner does not have to convert. The non-Catholic partner must be made truly aware of the meaning of the Catholic partys promise.
What happens when a Catholic marries a non-Catholic?
A marriage between a Catholic and a non-Christian (someone not baptized) is seen by the Church as invalid unless a dispensation (called a dispensation from disparity of cult, meaning difference of worship) is granted from the law declaring such marriages invalid.
Does my fiance have to convert to Catholicism?
One of the partners need to be Catholic and if the other is not Catholic, he or she need to be a baptized Christian. If you were not baptized as a child, you may go through the process of becoming a Catholic as an adult. Both partners cannot be closely related and this includes being cousins.
Is it worth losing your virginity before marriage?
If a woman is forced into giving up her virginity, if the sex is not consensual, then its a violation of the woman, her body, and her agency. And that answers your question: no, having sex before marriage does not make you a bad woman.