How to make a guy fall for me ?

Alright so i have this huge crush on my best friends brother.He is really hot and smart. But hes 3 yrs older than me. im in highschool, hes in college. i dont go to her house that often but now she wants me to come over for a sleepover. Im not stupid and i know that theres no way we can go out cos hes in college and besides im not really looking for a relatioship right now cos im focusing on my studies and getting into college. & i also dont wanta ruin my friendship with his sister. However i wanta make him like me just the way i like him.i no it sounds stupid but i really do. i cant stop thinking about him. Dont get me wrong, im not ugly or slutty or anything. i dont even go out with guys at my school cos theyre jerks. SOO anyways what do guys like in a girl and what makes them go crazy about them ?