Groban dated the actor from 2003 to 2006. The pair attended various public events together throughout their relationship, including the 2004 American Music Awards, 2005 Cannes Film Festival, and 2006 Vanity Fair Oscars afterparty.
Seven years after they called it quits, Groban opened up about their relationship in a February 2013 interview with Details magazine (via Entertainment Tonight). "We dated for about two and a half years, and we were madly in love," he said. "It was definitely my longest relationship."
Although things didn't work out between him and Jones, Groban told the publication he would love to "get into another serious relationship" since he's "a real romantic at heart."