Sean Penn joined model and on-again girlfriend Petra Nemcova in Haiti this past weekend. The philanthropic pair, who briefly dated in 2008 and have recently rekindled, attended a ceremony in Port-au-Prince where Nemcova was named a goodwill ambassador by President Michel Martelly. Penn himself was appointed as Haiti’s “ambassador-at-large” by Martelly earlier this year. Nemcova, who split with her fiancé, Jamie Belman, in April, has also made recent trips to Cannes and Mexico with Penn.