Just because there are babies involved does not mean my feelings or needs go away. What he ought to be doing and what he is doing are two very different things. I don't know if you know anything about giving birth, but taking care of mom is taking care of baby.
No, sorry. Your feelings, relationships and insecurities are irrelevant. You chose to have a baby. You come second
Break up with him, arrange visitation and forget your insignificant issues with romantic relationships
Be a parent, do what is best for your kid, forget what you think you need