Britney's former manager was a stabalising influence on the singer after a difficult period of mental issues following her split with husband Kevin Federline.
He doted on her boys Jayden James and Sean Preston, and encouraged her to retreat from the spotlight to spend more time privately with her family.
It looked like Britney would get her fairytale ending when Jason proposed in 2011, but just over a year later the couple called off their engagement. "I'll always adore him and we will remain great friends," said the star, while Jason added: "As this chapter ends for us a new one begins. I love and cherish her and her boys and we will be close forever."
As the couple move on with mutual love and respect for each other, we take a look at their love story in this special report.