Please don't leave me...

Lucy Heartfilia is a Celestial mage of Fairy Tail. She's in love with a boy,who was also a mage of Fairy tail, named Natsu Dragneel. So does the Fire mage. They both didn't know that they liked each other and both were afraid that they might be rejected. But still, they decided to confess to each other on this mission. but something happened which caused them to be unable to do so...