I like this boy...any advise?

Well i like this boy in class and hes one of my closest friends. no one liked him until i did. He doesnt know i like him and i think he might like someone else. Ever since the girls in my class started to susspect that i liked him they started to like him too. And this one girl whos is extemely pretty is all over him. i dont think he likes her but i really dont know. i think he likes my other frinend who isnt all that pretty but shes really sweet. i dont know how to make him like me and see me as anything more than a friend. we hang out a lot and talk pretty often. but whith all theese girls all over him its becoming harder and harder to get him to notice me. Any adivse? what would you do? sorry for the misspellings.