The man is looking for trouble,why would he ask to sleep with her again to appeas him instead of asking for his son to be giving back to him?She wronged u at the beginning but two wrongs can not make a right.Save her and your son the trouble,for God's sake
Nothing,you have said the truth that u kept the pregnancy.So it is left for him to accept you if he truly loves you and the baby which he already has been taking care of or he send u back to your parents.Any of the above cause u there is no other option