I moved into an apartment last Aug. 2008 and signed the lease for 13 months with a friend. Time has past and we no longer can manage living with each other. I put our apartment up for sublet and then my roommate told me she would not allow me to sublet me room out to anyone. She called the apartment complex and told them not to allow me to sublet me room out to anyone because she did not agree. So now I have moved out and into a new apartment. I have paid one months of rent so far while I don't live there, and she still will not allow me to have someone move in. The least still has 3 months left. And I'm now paying two rents every month until my previous lease is up. My question, is there anything I can do to get out of my previous lease since my past roommate will not allow me to sublet my old room? Or hold her responsible since she won't let me sublet and is not looking for anyone herself? I thought I had heard of a law were after three month of not living somewhere and still paying rent, the roommate who still lives there has to take over responsibility if no new roommate is found. Could someone please give me some advise on my difficult situation.
p.s. She has also refused to pay me the past utilities that were in my name while I was still living there.

Roommates are the pits? Have you learned that yet? I did too. By experience. So she won't simply sign you off the lease? I've never heard that of three months not living there that the remaining roomie has responsibility. You are on the lease, you owe your portion of the rent, until you are not on the lease. Subletting is a bad idea just because you are still responsible.

No never heard of any 3 month rule, wish there was. But, have you talked to the landlord, it appears the landlord has to either allow you to sublease, or make the tenant sign to be responsible.
Also if your lease allows you to sublease, the landlord can not stop you from subleasing.