yes.
think of it as leasing. your definitely locked into an agreement that will not be painless to get out of. but, its the easiest way to get her to clean your house.
helpful hints.
rent/mortgage - your name only
power - your name only
phone - not your name (or just use cell phones - my personal preference)
don't share credit cards
don't share any form of debt
cosign for NOTHING
im on my second live in gf. there are definite advantages and disadvantages. but the absolute most critical thing is to absolutely under NO circumstances share bills. either you pay 100% of a bill, or she pays 100% of a bill. do not cosign for anything ever for any reason. make sure the lease agreement/home is in YOUR NAME ONLY. it has nothing to do with women running up a phone bill or men being irresponsible with bills or either side being vindictive/hateful. its just that things have a tendancy to change. should either of you begin to feel differently about the other, your priorities will rapidly move away from any form of financial obligation shared between the two of you. make certain that at the end of the day you have the necessities firmly in your control. you have a roof over your head, you have power, you have heat, you have running water. make sure all of these things are in YOUR name. you can live without a phone and mcdonalds is just down the street.