My question involves landlord-tenant law in the State of: NJ

I met with a landlord (LL1) to view a property for rent, and agreed verbally that I would like to rent the property. I e-mailed the landlord my proof of employment, credit info, references, and the landlord sent me a proposed lease agreement.

Subsequently (the next day), I was contacted by another landlord (LL2) and informed that another property which I had previous interest in had become available when a tentative lease agreement fell through, and I would like to take that one instead. I have not signed a lease, or even agreed to all of the terms yet with the first landlord (i.e. deposit amount, repair terms, etc.). Am I bound to anything with the first landlord (LL1)?