In order to answer your rental question, you need to carefully read yiur presumed written lease with universitry housing and any sublease. Such documents control the obligations owed to you to university housing and vice versa.Most likely if the sublease fell through for your share of the rental and you did not get a complete written release from the university for the unit you are writing about, you are still responsible on the written lease that you presumably signed.I suggest that you consult with an attorney who practices landlord tenant law if you have further questions concerning the matter you are writing about.