Is a person considered sinful if they had a superficial sexual relationship (not fornication) with a girl with her full consent but were not destined to marry her? Is marrying her obligatory? And is it necessary to inform her that she lost her virginity during this relationship when there is no intention of marrying her, or should this matter be concealed if they do end up marrying?

A man's relationship with a woman outside the framework of a legitimate marriage is not permissible, and enjoying her is forbidden. The fornicator is not obligated to marry the woman with whom he committed fornication. It is not permissible to discuss her virginity with her, and she must be completely avoided. It is not necessary to inform her of this, even if you marry her, for informing her might be a corruption that provokes her resentment, and it might push her to contemplate fornication with someone other than her husband. The scholars have mentioned that recalling a sin can bring ill fortune.