Create a budget, put both salaries into a joint account, take the amount needed to cover all bills and expenditures and a certain amount into a joint savings and then whatever is left split in half and both take and both put that into a personal account as your own personal spending money. If you're living together and having a baby together then everything else should be seen as "ours". "Our" income. "Our" bills. Etc. Of he isn't willing to do this then he is a pr*ck.