I don't know how it works in the UK, but here in the states, both parents are required to take care of the child. Get paternity papers on the child just in case and get that established. I know there is no divorce in order here but that does not mean there isn't child support responsibility. Give up on him as a parter in this and set up a parenting plan. Let the courts get it documented and don't leave up to you and him getting along. Doesn't sound like that will happen. Get it on paper and stick to the time you're allotted in it. From there, they can establish who is responsible to pay for whom in child suport. This is the only way. Treat it as if you were married and have to set up custody and child support.