How TO deal with a girl that interested but plays HARD TO GET !!?

She is interested but playing hard to get

this is getting on my nerve !

when I pass near her she shows of her signs of interest but when we are in group with her friend she plays hard to get like ignoring me

what should I do ? Help me plzHow TO deal with a girl that interested but plays HARD TO GET !!?
ask her out ..... she likes you for sure ...its a way of flirting for girlsHow TO deal with a girl that interested but plays HARD TO GET !!?
play hard to get back at her.
ignore her too. When you'll ignore her, she'll find a way to talk to you.