Legal Question in Civil Litigation in California

Your question is about Landlord & Tenant Law, not General Civil Litigation. You will be more likely to get useful replies if you re-post it in that category.

Good luck.

In the situation you described you and your BF are a partnership and each are separately as well as jointly liable for the lease payments. Your options are to negotiate a move-out with the landlord and possibly only be liable for rent until the unit is re-rented or to get a roommate or identify a subtenant to take over your lease. As for your BF's obligation to you, possibly his remaining share of the rent until there is another roommate or sublessee or until the LL let's you out of the lease.