Is the marriage contract considered Islamically valid, given a history of illicit relationships prior to the contract, and is this contract forbidden in the sight of Islamic law, especially since the wife is suffering from misgivings about the validity of the contract?

The sinful relationship between a man and a foreign woman is corruption and a means to indecencies. Among the most dangerous of these is anal intercourse with a woman, which is a type of zina (unlawful sexual intercourse). If the marriage fulfills its conditions, then it is valid. The issue remains whether the marriage contract was concluded after repentance from zina or not. If it was after repentance, then there is no problem. If it was not preceded by repentance, then there is a difference of opinion regarding the validity of the marriage of a fornicator to the woman with whom he committed fornication before repentance. Repentance has conditions that must be met for it to be valid.