Well, depends what kinda girl you're talking about. If she's a girlie girl, she will always laugh when she's with you, which kind of looks fake, but she really means it. For that girl who acts cool all the time, she'll become nervous and less-cool around you. Give hints that you like her. Usually when a girl hears someone likes her, she'll be like "oh, he's so sweet" and then she'll like him back. Girls usually never show their feelings clearly to guys, but believe me, inside they are thinking about you constantly! And if a girl ever turns you down, just be like "She's not worth it." because every guy deserves a sweet girl.
Uh, ask her?
the same ways you know if the opposite sex likes you. human nature doesn't change.
then you must sex her
ask her who she likes
When she starts having sex with you. To learn how to get to that point, please seek advice from the encyclopedia of unanswerable male dilemmas
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
It Means have sex to see who he likes. Really will he want the girl who wont have se with him or the girl who will. so have sex tat way he picks you.
Ask her what she likes and listen to what she says.
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
She just likes gay sex that's all.