Perhaps its her pheromones that make your eyes twirl like a Los Vegas slot machine every time that you are near her :)
I'm a 15 year old guy. I have a crush on this girl but I've never talked to her. She is sort of popular. She looks very pretty to me but others say shes a 6. Why am I infatuated by her even though there are much more attractive girls in my school?
If you're going to select who to date based on what others say … you're not ready to be in ANY relationship.
TALK TO HER … and ignore what anyone else says.
Relationships, likes and dislikes, shouldn't depend on looks alone. A persons personality is a major factor in seeking a mate.