Is refusing to pardon someone who caused a woman to lose her virginity and then did not acknowledge her, while continuing to be angry at him for not rectifying his mistake, considered a correct action?

One who has fallen into adultery must repent, seek forgiveness, and increase in righteous deeds that expiate sins, because it is one of the gravest sins and indecencies. The adulterer is not obligated to marry the woman with whom he committed adultery, nor is she entitled to any financial compensation, as she was complicit and has no right to such. This is a grave sin that does not entail any worldly right, and its reckoning is with Allah Almighty.