I've had a case where someone was ripping people off using reviews I wrote on paintball equipment and saying he was me. After getting a lot of nasty emails from people who thought he really was me, I went to the police and they basically brushed me off and told me they didn't have time to deal with it and that it would most likely not result in any charges being pressed anyway.
So chaces are he is just making up some bs. Get the guys phone #, call him, and talk to him.