If the mother and father are not together, and the father has just "kinda" been in the picture the first 4 months of pregnancy, then gone the rest of the pregnancy but still saying (once) he still plans to be in baby's life when he's born...do you think the baby should have mamas last name or daddy's?

He's gone to two doctors appointments in the beginning, has bought NOTHING, and just talks about how he'll be in his life