Zach Gilford and Liana Liberato are proving you can fall in love anywhere - including on the set of a serial killer-focused TV show. The Criminal Minds costars are dating, a rep confirmed to Us Weekly on Tuesday, November 25, shortly after Gilford, 43, and Liberato, 30, were spotted on a red carpet together. "They started dating after they worked together," a source tells Us, noting that the romance is "fairly new.