There was a girl that I approached who didn't reject me, but instead of offering her phone number, she offered her Snapchat, and then her facebook (after I told her I don't use Snapchat). She told me it was because she just met me (which is completely reasonable imo), and would rather be friends first before going beyond that point. So, it's clear she's uncertain, and I wanted to give her the benefit of the doubt, without pushing it further, so I just gave her my facebook. Should I just give up on this, or will this yield any results?

And, are there ways of breaking out of the "I just met you" doubt that girls get?