Everyone in Fairy Tail High said that Natsu couldn't get a girl even if he tried
So Jellal made a bet. First girl (that's single) who walks through the classroom doors would be Natsu's girl,
|THE RULES TO THE BET|
Natsu had to make the girl fall in love with him if she didn't confess her love to him by the end of the month Natsu lost the bet
Little did anyone know the girl who walked through that door might actually turn out to be Natsu's soulmate.