Would it be ok if I asked this girl if I can add her on facebook?

so there is this 18 year girl who is new at my job she's only been here for a month i was thinking about asking her if i can add her on facebook just to keep in touch before she goes back to college
she does have a boyfriend but i'm just looking to keep in touch noting more
would that be a good idea?

what do u guys think
Updates
+1 y
I'm just looking to stay in touch should i just leave it be
Would it be ok if I asked this girl if I can add her on facebook?
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