If you're not sure if a girl likes you and you have her number text her a lot. If she uses text emoticons than she likes you. When you see her make eye contact with her. If she smiles and blushes/get all giggly whenever you talk to her she likes you. The best guarantee to see if she likes you is to ask her out. Even if she says no you will have that question out of your head. Build up the courage to ask her out, it won't kill ya.
Don't listen to her. Don't worry about building up courage. Be a speed racer and ask her out right now.
ask her who she likes
Get to know her.
this is simple get to know this girl
If a guy look at the girl twice then it means she likes the girl
That means he girl likes you and answer that question by telling the girl something she likes to do. If you don't know what the girl likes to do then you're a goner
I gess the same way you can tell if a normal girl likes you.
if she talks to you and touches you on the leg or something like that. then that means she likes you.
Ask her.
If no on likes you
ask her out
go to 'ask' and type in 'how do you know if a girl likes you' you should find all you need there
ask her if she likes you