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She could use a cheeseburger.
However, sources close to Sears said one of the causes was the world number four's long hours playing video tennis and PlayStation 3 games such as the best selling Call of Duty sequel.
Brad Gilbert, Murray's former coach, has said in the past that Murray spends "seven hours a day" playing video games.
The source told The Sun: "He would spend all his time glued to them. In the end she just got fed up with it. She wanted more out of the relationship."