Rudy Giuliani never forgets.The onetime mafia prosecutor told a newspaper columnist Monday that he still blames former Florida Gov. Charlie Crist for his dashed presidential ambitions in 2008 — because, Giuliani maintains, Crist didn't keep a promise to endorse him.Now that Crist has switched parties to run for Congress as a Democrat, Giuliani has made a point of making his feelings known."Charlie is a completely dishonorable man," Giuliani told Tampa Bay Times Political Editor Adam C. Smith. [Ratings Change: 3 House Races Move Out of Safe] Not that anyone in Florida had any doubts about where Giuliani stands on Crist. The former New York City mayor was featured in a 2014 attack ad when Crist was running for governor as a Democrat. "I've never met a person in politics that I disrespect more than Charlie Crist," Giuliani said in a video the GOP played in every Florida media market that year. [Crist Announces Florida House Bid]Giuliani's comments Monday picked up the thread."He would fit in with Hillary. Hillary is a bigger liar than anybody, and Charlie is more dishonorable that anything. Charlie is a completely dishonorable man, and stands for nothing," Giuliani said, according to Smith. "If Bernie were the nominee, Charlie would probably be running as a socialist."Crist has denied making any promises to Giuliani.