Britney Spears is hoping to win back her estranged husband Kevin Federline, according to a source.
But K-Fed is dating Playboy gal Nicole Narain and has told Britney that he has no plans to get back with her.
A source close to Kevin told the News of the World, "Britney's bouncing off the walls with rage and has been calling Kev day and night to check he's not with Nicole."
"She's desperately jealous and wants to keep Kevin's attention on her. She wants him back. She thinks by getting Kevin back he'll drop the custody battle - but that's not going to happen."
Brit is hoping that Kevin will drop his custody battle for their two sons Sean Preston and Jayden James.