What is the ruling on a woman concealing her false virginity from her husband, and is that considered a crime against him, and how can one repent?

We do not know the reason for the loss of virginity. If it was due to an unlawful act, such as fornication, then repentance, seeking forgiveness, and increasing good deeds are obligatory, according to the Almighty’s saying: "Indeed, good deeds do away with evil deeds." If it was due to a lawful reason, then nothing is required of you. You have done well in concealing the matter from your husband and covering yourself, and this is not considered betrayal unless he stipulated virginity and married you on that basis. In that case, you would have deceived him, and repentance would be required of you. We warn you against informing your husband of this in all circumstances.