How can I get the guy if his family doesn't like me?

Ok, I'm 13 and I REALLY like this guy who's 15, and I'm pretty sure that he likes me too. we're both into the same stuff, and we seem like the perfect match, but there's a catch. His sister is like, my best friend, and I told her parents that she was cutting and a bunch of other stuff, and she lied about it and said that it was mostly lies, and now her family thinks that I'm scum and she's not even allowed to speak to me, and the guy already has a girlfriend, but I don't think that they really, truly like each other. If I even made the tiniest little move, then everything could blow up on me, cause I don't know if he hates me or not. He's the one I told about his sis first.... I'm not really even sure if he likes me, but I was in Tahoe w/the family. before my friend started cutting, and in the car he and I sat next to each other and were listening to music and almost asleep, and I opened my eyes and his face was like 1 inch away from mine, and his brother broadcast it to the car, and he moved, which means that he was awake..... I mean I really like him, cause we have so much in common. we could talk about stuff for days straight, given the chance. Argh! I am still friends w/the friend and we occasionally talk and stuff, so it's not like she hates me, I made her life a whole bunch better.....I just don't know if the guy sees that. What should I do?

Chill, Just Chill for a year or so. It is OK for a 13 year old girl to be infatuated with a 15 year old guy. The 13 year old guys are still kids, and you are beyond them emotionally and socially. Just be a friend.

I've already chilled for a month and a half, and that's not working for me. I think about him constantly, I can't stop. I can't just be a friend, I like him too much. plus, I never talk to him, so I don't know if he thinks I'm scum like the rest of his familiy or if he beleives that I did the right thing....

hey am 15 right and I don't even think about boys but I'll help you out.
just don't think about him because boys expect girls your age to fall for them at the age you said he was. just calm yourselve down and take it easy I have a guy that I liked and stiil do but he is more fitter than me-like really -like really healthy and has like really slimmer girls falling over him- anyway I have had a thing for about 2 years for this guy but I haven't told him yet I just take everyday as it comes me and him talk we tease each other but other girls falling over him doesn't make me loose hope but anyway if you don't want to tell him how you feel right I would advice you that first right occupy yourselve with loosing weight and let him be your motivation then you are slim and gorgeous tell him how you feel but don't take that motivation and starve yourselve do it the right way do your business and when you have lost weight wear not too reveling clothes so that you have a chance and oh yeah find out some way what he likes about a girl.