John Mayer and Jennifer Aniston may go down in history as being the first celebrity couple to break up because of a Twitter obsession. We all know that avid Twitterers like John Mayer spend a good portion of their time in the Twittersphere, but according to Star, Mayer told Aniston that he was too busy to get in touch with her, yet he always managed to have the time to update his Twitter page (if only he would start Twittering more of his fashion style tips). Eventually, Aniston got fed up with John putting his Tweeting priorities ahead of his relationship so she decided to call it quits.