<human>: Can you provide a brief rundown of the text in within 3 sentences?

Long story short my former roommate, I'll call her Rhea, and I were both subleasers on the original lease. Things got really out of hand which eventually led to just her and I being in the apartment and revising the lease to be just us. The former leaser, I'll call her Lacy, decided she wouldn't get a sublease for her portion of rent and her parents would just pay her portion. 2 months before the lease ended, her parents changed their mind and left us to fend for ourselves (after claiming we had no proof that they were supposed to be paying - Lacy stole the contract her mother made us sign so we really didn't have a way to prove it after that. Yes, I know we should have made more copies). Rhea and I both come from poor families and worked minimum wage jobs part time while being full students, so we had no way of being able to cover Lacy's costs. This ended in court fees, back rent, and late fines that accumulated to over a thousand dollars. 

Rhea moved back home and decided the debt was out of sight and out of mind. The leasing company did not make efforts to contact us about it until almost a year later, telling us they'd send it to collections if we didn't pay it. Rhea decided it isn't her problem anymore and won't help me pay it off. I can't get accepted to sign another lease because of this and I don't have the money to pay it on my own. I'm running out of options as my lease (I'm living under the table with a friend) ends in May and I won't have a place to go afterwards.
<bot>: Got fucked over by one of my former roommates and the other refuses to help pay the debt we owe and I can't sign another lease because of it.