When Disney Channel's American Dragon Jake Long first came on during the year 2005 to 2007 (only two seasons), Jake Long first got a crush on Rose since he first met her at school on the very first episode of the series. They first started out as great friends (even though Jake wishes that they could be more than friends someday).
But what they didn't realize that they also met in a different life. . .as enemies.
Jake is known as American Dragon that protects magical creatures that secretly live in New York City. Rose is known as Huntgirl who's part of a dark group called Huntclan that captured magical creatures for experients and other used, steals rare items, and slay dragons.
Jake was the first to discovered this during a school's field trip and was heart-broken that the girl that he falling for is also one of his arch-foes. When Rose later discovered this by almost slaying him (couple of episodes later at the last one of the first season), she's torn between her alliance with the Huntclan and the love for Jake, confused of what is really right. And that's when the first season ends.
During the second season, after discovering a lot of dark secrets that the Huntclan is keeping from her, Rose begin to help Jake and his friends with secrets of what the Huntclan might do now and then, making her a Huntclan traitor.
What will really happen between them. . .you just need to watch the show to find out yourselves! I don't want to spoil the fun to those who just heard about this!>_<