Congratulations for the birth of your lovely baby. How sad, though, that your son’s father is estranged and shows no interest. Do you know any of your ex’s close relatives, such as his parents or siblings, or do you and he have any friends in common? You might try contacting someone who knows the two of your and would likely care. Even if your son’s father continues to keep his distance – something that, sadly, you’d be powerless to change – your little boy might have grandparents, aunts/uncles, or other people who’d love him and want him in their lives.