I feel so friendless, and I just hate my life right now?

I have great famiky, but in school, people thinks im the cheery type of gurl, and i get good grades, and I have good manner. they call me ms. Perfect, but nobody see the real me, if I show them who i am, they like think im boring,(I DO have good manners, and i am nice, i dont fool around) and boys keeps on making fun of me!! (well not all, but this group of boys) i never know them, but they know me, and they treat me unfairly. My used to be best friens is getting in my nerves! She hangs out with those boys who picks on me abd sonetimes i just feel like slapping her, but i dont :P This summer, a lot of people go out with theur friends, but im alone... People in my age these days say bad stuff and are perverted!! I feel so alone!!