Hey man, welcome to the forum!
I'm no expert on this stuff but I've had a very similar situation to you regarding a girl you like, you know her over facebook and wanna hook up but nothing ever happens. You say that you've tried gettin her number and want to try and meet up somewhere but it never goes anywhere or nothing manifests.
I've had that a few times, where you're putting all your effort into the girl and she's not giving anything in return which just in the end causes you pain and self doubt in yourself. I've been in that alley before. This one girl I knew was really nice, I never wanted to get with her in a sexual way I just wanted to goto a club with her/take her to a movie/hang out etc, be her good friend...but nothing ever happened and she kept on making excuses that she had other plans. Eventually I realized she's just not interested. Girls like that take work and if you're a beginner and just getting into the game, it might take even longer chasing one girl when there are plentiful amounts out there just waiting for you everywhere.
My advice is, don't settle for the first girl you see or fancy. Just move on dude, if your putting all the effort into her and non into yourself, your going to seem desperate and even if or when the day might come that she does reply to you, she'll be able to pussywhip and persuade you into things she wants and then she'll be the alpha over you and she'll know that you want her attention just like a puppy. Dont be the puppy.
Leave her be man there will always be others.
Hope that helps
