@beetgeet You've had some great advice here. I really hope you read it and listen and don't feel 'got at'. You're not doing anything wrong.
ime the biggest concern is that he doesn't take his equal share of the domestic load when he's at your place. It's not 'helping out' (that would imply it's your responsibility), it's being an equal adult in an equal relationship.
I also wonder whether you both feel able to sit down, and share your financial information, and your aspirations and expectations: salary, expenditure, bills, debts, car loans, holidays, meals out with friends... etc. What do you save? Do you save? Having a focus on saving money (by living together) doesn't make him inherently bad, but not being able to discuss it with you does.
I'd suggest that you never move in with someone until you know you are on the same page in terms of domestic equality, and on the same page in terms of financial compatibility and openess. In that context commitment, love, sex, happiness, joy, desire, laughter, can all flourish.