I have a joint lease (I signed with another person) but this person moved out, and stopped paying for the lease. I can't afford this place on my own, hence the roommate, but I've borrowed money to keep the place and not ruin my credit. Half the rent for the 5 months this person hasn't paid would total over 3 grand, I'd need that to pay back my loans, my question is how do I sue this person for not paying on the lease that has their signature that they are responsible for!! ????????What is the name of your state (only U.S. law)?