Cameron Diaz and her Yankee boyfriend, A-rod, have decided to call it quits. According to sources both are too addicted to their careers right now to get serious in a relationship. "They broke up recently," a source close to the 36-year-old slugger told Us Weekly. "She's very busy with her career," the source said of the 39-year-old actress. "And he's had injuries and wants to focus on his ...