Is K-Fed source of leaks about Britney?

Britney Spears has yet another reason to be miffed at her hubby. Kevin Federline shelled out $300,000 for a wristwatch without telling his wife first, according to Us Weekly. Perhaps it's no co-incidence that that's the exact amount the aspiring rap star reportedly was paid to record an album and tour in Japan. "All he does is work on his music and try to find ways to get out," a source told the mag. "That is all he cares about. It has taken a big toll on their marriage because he's not always there for her and he used to be."

What's more, Spears suspects that K-Fed is responsible for some of the leaks to the tabloids about the couple's private lives. "Britney knows Kevin tells his friends information, knowing they will leak it to tabloids," a source close to Spears told Us. She has taken to not telling her hubby certain things - including that she was going to announce her pregnancy on David Letterman - for fear the info would be leaked to his buddies. "They sell stories for money. ... She is sick of him using her for them to profit."