Love at First Sight for Jenna's Guy Laura Bush may have thought the two were just flirts years ago, but first daughter Jenna's fiancé, Henry Hager, felt it was love at first sight. "He knew when they started going out," says one pal, "that she was 'the one.'" While no date is set, advisers suggest that a White House wedding could be the big society event the first lady has always longed to do but couldn't because the prez is [said to be] a party pooper. Paul Bedard says Jenna probably feels the tug of Texas, but this may be...