Idk what to title this

So my so pride his self on being a great father to his oldest son he tells me storys on how he always had her 24/7 and how he raised her by hiself for 1/2 her life etc etc n his son also tells me so i know its not a lie so we decided to have a baby together and he dont be around my son the moment my child starts to cry he hands him right back to me. Dont evan try to calm him down dont wanna change diapers nothing n im starting to feel some type of way