There are bills to pay every month if you want to keep a roof over your head, and the cost for housing is certainly not getting any cheaper. To try to save some money, many people look to share that cost by living with a roommate. A new report from SmartAsset looked at apartment rents in 100 cities across the U.S. and found where a person could save the most money if they split the rent of a two-bedroom apartment with a roommate versus renting a one-bedroom apartment.