Every Successful Relationship Is Successful for the Same Exact Reasons
A relationship is not 50/50. We all have things we like to do and hate to do. We all have things we are good at and not so good at. One partner may work harder outside the home, and the other may have a more relaxed position.
Be practical in figuring out the division of labour in running the household. Lay out rules about how you will share finances, how much debt will be taken on, how much each person can spend without consulting the other. Have meetings about this stuff.