One of the things that will make you know that a girl likes you is the body language. Check her eye contact, her hand gestures, sitting position and the way she talks. Pay attention to the conversations she makes and if it is about you, then that's a clear indication that she likes you.
Girls will do anything to get near you. They'll talk about you with their friends they will get pushed into you when you're walking close to one another. They'll make any excuse to talk to you/text you. You'll DEFINETLY know. It'll just be obvious! If not MAKE A MOVE:)!! Good luck!
YOU CANNOT tell if someone likes you based on hints .... The only way you will ever find out if a person likes you is if they tell you directly themselves. Hints may be mistaken as flirting when really the person is just trying to be nice.
Always wants to be near you,Ask for your number, Stares at you a lot, flirts with you, Treats you differently then she does the other guys. She always wants to talk to you never wants the conversation to end...
She will look at you a lot, maybe sometimes smiling, she whispers to her friends when you are around, if she is near you she will stand close, I don't know if this is true but watch her pupils cause apparently if someone lays eyes on someone and they like them there pupils will get big