<human>: Can you condense the text into three sentences or less?

So this situation is really weird and stressing me out so i could use some advice on what i need to do to protect myself.

My bf and I got a year long lease in California which should have ended last month.  We are now separated so i am living elsewhere and paying "rent" elsewhere (but not on a lease myself).  So I'm still on the lease as well as my parents as the guarantors (i didn't have a stable enough job until this year)  We have gotten no contact from the landlords.  My ex tried emailing them but doesn't want to call and they haven't responded to emails.

I need to get my parents off the lease.  I'd rather not be on the lease.  And he needs to find a cheaper place.

My questions are:  What happens if the new lease isn't made/signed?  does the old one carry over?  is there now no lease?  Do we risk him being kicked out suddenly?  Are my parents and I still liable for payments if he fails to complete them?  What should we do to protect ourselves?

Sorry for the rambling but any advice is more than welcome.  Thanks for reading this:
<bot>: lease should have ended a month ago. I don't live there and am on the old lease.  Person who lives there doesn't make lots of money.  Landlord hasn't made contact.