Yes you have to follow the terms of the lease. You are however entiltled to a copy of it, and I owuld ask for it. Some leases will include a clause that gives the renter the option to break the lease early if 30 written notice is given. Some rental companies will also allow a lease to be broken if they are given enough notice to rerent the place before the current residents vacate. I would get a copy of the lease and see how it reads and if any of these options are available to you!