ya, like 33 and AXiD670 said, it is normal to have a little crush on someone, because you are human, it is once you want to or actually do act on those feelings where you get in trouble.
sometimes its fun to have a school girl crush, that rush of adrenaline when you see them
I have a crush on the soux chef at the restaurant i work at... he's so not my type... bald and pale but god... the way he cooks a steak or preps the food... it gets me all hot and bothered lol
moral of the story is... have fun with it but you know where your loyalty is