Actually, I just got this post myself...from a friend of mine...when I later checked it, the user was non-existent.
I'm wondering if there is either a scam for texting the person--I did not--or a means of getting access to your FB, since only when you allow someone to be your friend, they get details on you.
You get a message on facebook from some girl and she gives you this number to text or call her sometime. This the famous FB scam which is getting more an more popular. I don't know "her" so I also won't reply