After little over a year of dating Lily Collins and Jamie Campbell have called it quits! The actors, both 24, started dating in July 2012 while filming The Mortal Instruments: City of Bones, Us Weekly reports. The twosome are currently on a press tour for the film and according to a Us Weekly insider they haven't let the breakup effect their professional relationship. "They've been really good about doing the press tour together for their movie," a source explained. "They were able to stay friendly."