First of all, chill out bro. It's really not that serious. She is one out of millions of potentially datable women you will meet in your life. Calm down
Next time you are in a conversation and you feel the onset of the dreaded awkward silence, here's what you do: take a deep breath, relax, sit back and look her in the eyes as if you're waiting on her to say something. Nine times out of ten she'll feel like the silence is her fault and try to fill it, usually by asking a question beginning with "So ..."
I would take her bringing her friend as a sign that she's cautious and yes, perhaps a bit nervous. You should take it as an opportunity to win the friend over so the girl you're into never hears the end of how awesome you are
Your boy,
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