The National Enquirer says Jackson and Dupri, who have been together for four years and were reportedly pondering marriage, began battling over her recent tour — managed by Dupri — which was a dismal failure, with a string of canceled concerts due to poor ticket sales. The Enquirer, citing unnamed sources, said the fading superstar, 36, has moved out of Dupri’s Los Angeles home.

“Janet and Jermaine finally hit a wall,” the source was quoted as saying. “They were fighting over his management of her career. In the end, she decided to make a break.”