What is the way to reassure oneself of the acceptance of repentance from fornication, knowing that the fornicator is a Christian woman and has given birth to a child, and is the child attributed to his father?

Adultery is one of the most heinous sins, but Allah accepts sincere repentance, which entails abandoning the sin, regretting it, and resolving never to return to it, while also concealing one's sin. If you repent, rejoice in Allah's acceptance and forgiveness. Do not preoccupy yourself with the child born of adultery, as he is not your legitimate offspring, though there is no harm in showing him kindness. Occupy yourself with righteous deeds, hasten to marry a righteous woman who will safeguard your chastity and help you obey Allah, and frequently engage in the remembrance of Allah and supplicate Him.