ohh, where do i start? Well there's this guy, and he's handsome,

ohh, where do i start? Well there's this guy, and he's handsome, smart, tall, funny, sweet, athletic, just an amazing person, and i think im in love with him, but the crappy part thats tearing me apart is that i just turned 13 on december 21st and he will be turning 18 in january...and i dont know what to think, is there even the smallest chance that he could like me? or am i just this kid that his sister is friends with? And my mom even made this joke that she wants me to marry him, and he knows all this, and i almost feel like i want to marry him, really bad, but im worried that by the time im old enough too date him, he'll have a girlfriend, or a fiance, and i was waiting for him and had nobody....thats what im afraid of, because i really want him.