How do i know if this girl i really like, likes me back?

dude you got to be young....1st ask her...2nd if its not always the outside that counts....how will you get to know the inside unless you don't talk to her yourself...? She will like you more and be pressured to like you cause you talk to her yourself...she will be like he dont' use his friends to talk to me...I like that...she don't want to talk to your friends she wants to talk to you....