Billllsss

How do yall do bills in your house? Do you just tell your SO to give you a certain amount of money each month or tell them how much bills cost and let them decide what to give??? I need a crash course in adulting🤦🏾‍♀️🤦🏾‍♀️🤦🏾‍♀️🤦🏾‍♀️🥲🥲🥲😵‍💫😵‍💫😵‍💫