I wonder why she hasn't sent me a friend request yet?

This girl who seems really into me has been talking to me only starting this week. She knows my name and talks to me a lot. I'm pretty sure she likes me, but I wonder why if she liked me so much that she hasn't sent me a friend request on Facebook?

I mean I would expect her to lol, and I like her too and I make it obvious. Your thoughts?
I wonder why she hasn't sent me a friend request yet?
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