You have to ask yourself a simple question. Does she seem interested when she's around you? Smiling a lot, laughs at your jokes, does she ask you about your life?
If she's interested at all, you should be able to get yourself to a point of sexual tension and go for a kiss. If she reciprocates it then you're golden. If not, make sure you have a "No big deal" demeanor about it, keep it light. Smile and say, "Sorry, thought there was a moment there." If she's not into you just yet then stay friends for the time being and find someone else.
Best of luck to you.
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Sincerely,
Jack Sunday

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