What can I do about a former boss threatening my new job through text messages?

I worked there and moved to a better job (both in bars) recently. The text I received was "I heard you were bad mothing me and if you want to play that game, I will contact Angela (new boss) and tell her you were stealing from me and show her some kind of tapes." When in fact I hadnt been bad mothing and everyone knows I loved my last job. Should I do anything or wait to see if he says more?