All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
We have already mentioned that Islam urges forgiveness and tolerance, so please refer to Fatwa 84351.
Therefore, if a person has wronged another person and he apologized to him, then the latter should accept his apology, because accepting people’s apologies is a characteristic of the generous and kind people.
Nonetheless, the occurrence of such disputes at the start of the marriage may have bad effects on the marital life.
It should be noted that a fiancé is a non-Mahram to his fiancée until he conducts the marriage contract with her. Therefore, it is not permissible for both of them to be too lenient and transgress the limits of the Sharee’ah in dealing with each other, like him being in seclusion with her, going out with her, or talking to her without a necessity like many people do. For more benefit, please refer to Fatwa 86143.
Allaah Knows best.