Well....in order to establish any type of relationship......you have to talk to her. Getting to know her.....and letting her get to know you is what you need to do first before you take things to the next level....(which is asking her out). Otherwise its just gonna turn into another meaningless crush from afar.....or you may freak her out by asking her out when she really doesn't know you...

So talk to her....get to know her.....and then go from there.

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Appreciate the good times and learn from the bad times....