Tried my best to avoid but you definitely need a reply. Ik did well by repenting of Zina (fornication). We ask Allah, The Exalted, to safeguard for the rest of our life and protect us from temptation.
An illegitimate child is not attributable to the male perpetrator of Zina; rather, she/he is attributed to his/her mother. So he/she is not to be traced back to , and one is not obliged to provide for him/her. As Jamima is taking care of that girl, supporting her financially is commendable because it is considered good-doing; Allah, The Exalted, Says (what means): {…and Allah loves the doers of good.} [Quran 3:134]
If you call him to Islam and strive to guide him to it, then this is among the greatest acts of good-doing and most virtuous deeds that draw you closer to Allah, The Exalted.
In an authentic Hadeeth narrated on the authority of Sahl As-Saa‘idi may Allaah be pleased with him the Prophet sallallaahu `alayhi wa sallam ( may Allaah exalt his mention ) said to ‘Ali may Allaah be pleased with him before dispatching him to Khaybar: “...Thereafter, invite them to Islam and inform them of their duties towards Allah in Islam. By Allah, if one man is guided through you, it will be better for you than having red camels (a very expensive breed of camels considered the most valuable property in the sight of Arabs).” [Al-Bukhari and Muslim]
I think this must put a full stop to this useless discussion.