I think it's not just for teens, although the romance is very heavily laid on...its one of those gets very intense "I can't live without you, I'd die if you weren't near" types pretty quickly after they meet. However it does go with the storyline and in my opinion adds something extra to it - I was worried that I wouldn't like it because I'm not too much into vampire movies and stuff like that, so it's kind of something else to focus on as well, but the vampire bit turned out to be fantastic as well. I loved it, but I would've liked more action probably - there's only one
major "vampire fighting" scene really. I hope that all made sense