Have one account for paying your bills ... Have one account for savings ... And have one account for "mad money"
If you're sharing expenses such as bills with someone than divide the bills into 2 ..Ex: The cable bill is 200.00 than each pay 100.00 a piece
I'd sit down and list all the household bills. Group bills in two columns in an effort to get them as close as possible to being equal. One person pays one group and the other person pays the opposite group. They can be divided using the same method for as many people as you need.