LOVE IS IN THE AIR?BUT WHAT DOES THAT MEAN FOR GREG HEFFLEY?A VALENTINE'S DAY DANCE AT GREG'S MIDDLE SCHOOL HAS TURNED HIS WORLD UPSIDE DOWN. AS GREG SCRAMBLES TO FIND A DATE, HE'S WORRIED HE'LL BE LEFT OUT IN THE COLD ON THE BIG NIGHT. HIS BEST FRIEND, ROWLEY, DOESN'T HAVE...