I despise him...but cannot stop thinking of him. Why?

Girls often go for the older guys because they mature faster then the guys their own age. U look up to him as a teacher and bein so smart and mature this can then lead to other feelings its pretty normal for girls ur age. U probably don't even hate him as much as u think u r most likely seein other people not like him and sort of feel the same way. :) that's my opinion anyway