Becoming attracted to this girl but not sure how to advance things?

i've meet her at her work , well she's worked there for a while but lately really into her and we've been talking more too. but i don't even have her on social media yet and i wouldn't even feel comfortable asking for her # . i'm pretty sure she doesn't have a boyfriend so there does seem to be an oppourtunity here to possibly date her this summer

Becoming attracted to this girl but not sure how to advance things?
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