Relationship Advice

ok the guy i like(he might like me back) talks to any other girl and my sister fine, but when it comes to me….hardly anything.
we had hardly talked before our 1st date. and then he asked me to homecoming. and we still barely talk. is it us being nervous? or is it that he doesnt like me like that? sometimes when my guy friends are being stupid and teasing me he will tell them to knock it off, but he looks at me sometimes, and most of the time it seems like he is kinda ignoring me. cuz when i am right there and so is my sister, he will say something to her, and I just stand there, but when he says something funny to my sister he looks at me. if anyone has any idea what this boy is thinking that would be great.
my best friend is his friend, and he talks to her more than me. he talks to every girl more than me. i think we wanna talk to each other we just dont know how. @ Homecoming the end of the last song he spun me out & spun me into this half hug where he put his arm around me