Why do girls stare for so long and do nothing?

Why do girls give you that look as if they want to be approached and do nothing? At times it just lingers on a bit too long and I can only act as if I don't notice but if they're that interested shouldn't they come to you every once in a while
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+1 y
Its kind of awkward walking up to a girl thinking of what to say only to give them a blank stare and then turn around leaving her with the look of WTF, that's happen to me before even when they've tried to talk to me first. I can't speek so I'm the wrong person to look at, it might seem weird but I'm always looking around for other guys she should be more interested in
Why do girls stare for so long and do nothing?
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