I want him but I don't think he's interested...

So there's this guy that I've had the hots for for some time now and I want him, but he's only into girls that are known for being easy. What I don't understand is why does he only go for these girls when he can do better, and by better I'm hoping I classify as "better". I'm told that I'm skinny/pretty but I don't believe it, and when you throw in the fact that no guy pays attention to me at school it makes me think I'm and ogre. Basically, what do I have to do to get this fella to notice me and want me in return? I'd rather not give up my dignity and I'd rather not do something that could potentially be embarrassing considering I have a couple of classes with him, Thank you for your time.
I want him but I don't think he's interested...
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