I think a girl should make a first move if shes into someone. Otherwise you will never know and always wonder what if...?

Before rushing towards him and kissing him, try a simple conversation to get things going..... Then casually suggest hanging out sometime and see what he says. If hes into you he will jump at the chance.....and if not then he will say no.

Like Tone said, sometimes a simple hello can start things up....and a smile. Lets him know your interested.....

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