How do you deal with a random crush?

So I think this guy in my college class is soooo cute/smart and funny but in a different way. He's not the kind of typical ';hot guy'; so i'm pretty sure he won't hit on me or anything. I think I may be handling it correctly: sitting next to him in class, leaving class at the same time as him and subtly flirting (he once held the door for me and smiled!!!! lol) But seriously, we only have a month of class left, how do i approach him? I need to get to know this guy!!How do you deal with a random crush?
Try not being so full of yourself and maybe you will have more guys like you.

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