Nationalledger.com: Former flame Justin Timberlake has reportedly told new mom Britney Spears to leave hubby Kevin Federline if she is unhappy, according to a published report. The American tabloid 'The Star' cites a source close to both singers in a report. An item on the web site notes: When Justin Timberlake, 25, heard that his first love, Britney Spears, 24, was desperately unhappy, he telephoned her in mid-January to get the truth straight from Britney herself. "Justin asked point-blank, 'Are you happy?'" a source close to both singers tells Star. "Britney paused for a few seconds, sighed and said, 'Sometimes.... You know how it is.'" "Actually, no, I don't know!" responded Justin.