Love you more than ever: Michelle tweets on Obama`s birthday

Washington: Michelle Obama took to Twitter on Monday to send her husband an affectionate birthday message -- and a gentle ribbing about the US President`s graying hair. "Happy birthday, Barack! Your hair`s a little grayer, but I love you more than ever," Michelle Obama wrote on her official twitter account, @FLOTUS. The message was accompanied by an undated black and white photo of the Obamas as a young couple relaxing on a sofa. Barack Obama is spending his 52nd birthday weekend at Camp David, the rural Maryland retreat made available to US Presidents. He was to return to Washington later today. AFP