Is abstaining from zina (unlawful sexual intercourse) and intending to seek chastity through marriage considered repentance, and what is the ruling on contracting marriage with a chaste woman after the fornicator's repentance?

The marriage of an adulterer is valid according to the majority of scholars, even if he has not repented. As for someone who has repented from adultery, there is no doubt about the validity of his marriage. If a man repents before his marriage with a complete fulfillment of its conditions, then his marriage is undoubtedly valid. And if he was not repentant at the time of his marriage, then his marriage is valid according to the majority, and there is no harm for him in acting upon this opinion and remaining with his wife, and he should frequently seek forgiveness and express remorse.