"Will see if he agrees..."
OP, if he doesn't agree, he moves out and you make a claim through CMS.
At the very least, he has a legally binding financial obligation to his child. As a parent, he should (at a bare minimum) cover half the costs of everything required for his child. Milk, food, clothing, bedding, furniture, nappies, baby classes, toys, housing, heating, travel... EVERYTHING necesessary for HIS child.
As you are unmarried, he does not have any financial obligation to you. However, as an employed adult living in a house, he owes his fair share of rent, bills, council tax, insurance, and whatever else he benefits from (food, petrol, car tax/insurance).
You said, "I am an independent person", I am very sorry and as gently as possible, in this case you are a mug. A baby is not an independent venture. Why should you subsidise the other parent in a joint venture? Especially when you are financially disadvantaged in comparison!
Sorry OP, but I am seething on your behalf. He is knowingly using you. Where is your independent courage and spirit? You didn't get to having your own home and being financially independent by giving handouts to every cheeky fucker that rolled up.
It is time for you to say "either we agree a fair division of costs for the house and for the baby or you move out and I shall apply to CMS." Although honestly, I dont see why you'd want to stay with a partner who treats you like this.
If you are determined to stay with this cocklodger, I would suggest:
- a fair market rent for a nice room in your area (with rental agreement to protect your house)
- 50/50 on council tax, electricity bills, insurance, etc.
- everything else (baby, holidays, joint purchases) split proportionally to income, to be reveiwed when you go back to PT/FT work or either of you gets a raise, etc.
Apologies again for the vitriol, it is for him, not you.