I'm even more convinced something is seriously wrong with him. Lying about producing a flop is extremely weird.
Antisocial personality disorder. Also known as "sociopathy" or "psychopathy." I'm totally fine with armchair diagnosing him because it is totally obvious, same way Trump's narcissistic personality disorder is.
It was technically possible for him to "just" be a pathological liar, but that is in the DSM as a symptom of ASPD (and also NPD for that matter) anyway, and when I heard that story of him stealing 3000 dollars from a veteran whose dog he claimed to be raising money to save, there was no other word for that than "psychopathy." I hope this monster goes down.