HEL MEH!! please?? and thank u (if u even help me)?

OK my prblem is that i like this guy BUT he nos that i like him. Well i dont know exaclty why i even started liking him but i did and i have like never even said a word to him! Well i want to talk to him but he is in NONE of my cles except chior and even if i do talk to him i dont know what to say i will just .....studer or hesitate and i will just stand there like an idiot....how in the world can i talk to this guy????!!!!