Britney hits back at marriage split rumours

Britney Spears has denied claims that her marriage to Kevin Federline is in trouble.

Recent reports suggested that Spears is becoming increasingly annoyed about Federline spending too much time partying in Las Vegas with male friends.

However, in a magazine interview, Britney insisted, "We're going to be together for ever. We know that, and that's the only thing that matters."

Federline added, "I could go on for ever about my love for this girl. I could be sitting at home doing nothing. I could be playing video games. She's more proud of me than anyone has ever, ever, ever been in my lifetime."