The Office co-stars John Krasinski and Rashida Jones are dating again - more than two years after the couple enjoyed a brief relationship in 2005. Krasinski and Jones, who star opposite each other on the U.S. TV comedy, celebrated New Year's Eve (31Dec07) on the Caribbean island of St. Bart's aboard mogul Ron Perelman's yacht. A source tells U.S. magazine People, "They're definitely boyfriend and girlfriend."