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Oh suuure, right, whatever you say!

So Star Magazine - who else? - has a cover story about Britney Spears and Kevin Federline reuniting... in bed. "Brit and Kevin can't keep their hands off each other!" exclaims a family insider. "The flings have made them both a lot happier."

The mag also claims that K-Fed's g/f Victoria Prince knows about the raunchy affair - she "caught him with his hand in the cookie jar," says the source.

We find this extremely hard to believe! Brit's busy on tour (and then there's that whole backup dancer thing) and Kevin is always hanging out with Victoria...

Of course, anything's possible!

Except this, which sounds completely impossible!