India, Nov. 6 -- Actor Dakota Johnson and rapper MGK have sparked dating rumours after they were spotted together in California on Tuesday, days after a source told PEOPLE that she was "enjoying spending time with the musician". The two were photographed smiling outside a restaurant. The duo were first spotted together on September 12. Dakota was previously linked to musician Role Model while MGK shares a 19-month-old daughter, Saga Blade, with actor Megan Fox....