Need advice. My buyer was a scammer! Stole $2000 from me!

I badly need an advise right now! Please. Before I talk to a lawyer. So, I met my buyer here in 5miles. I have a listing of an in demand computer parts which was the latest release of nvidia and amd. This guy decided to buy the product that I listed here. We met up and he got his product. He paid through paypal with the amount of $2000, which I thought was the safest way! Then now, he filed a fraud in his bank account saying that he did not authorized that payment, so now paypal charged me for $2000 because his bank took back the $2000 that he paid me. Now I dont know what to do and this buyer is ignoring my messages here on 5miles