Who's responsibility?

A few months ago I moved out of a house I had shared with one other girl because of a crime spree in the neighborhood and the landlord was not keeping up the property. When I first signed my lease the landlord had said that breaking the lease wouldn't be a problem if need be. But instead of breaking my lease, I agreed with my roommate to pay rent while she looked for a roommate. We then had a falling out and three months later has not found a roommate and I'm afraid she will not get one just to make me pay. Is there anyway out of this? If I break my lease does that automatically break her lease too? Is it the landlord's job to find a sublet if I break my lease? Since it was a verbal contract is it applicable? I don't want to screw my roommate over but I can't pay the entire rest of the year. Thank you very much.

Yo are still responsible to the landlord unless he agrees you could leave. She has to reasonably try to re-rent and if she does not then you need not pay her any longer.