There are a couple of things you can do at this point.
One of them is to send a text to that number with "Who is this?"
and pretend you don't know who it is, and start a conversation like that.
But another way, probably a way that I would recommend is to call that number, and then say,
Hey who is this? I woke up this morning and saw this number in my phone...
And when she tells you who she is, then say, "O now I remember, you were the girl who forced me to
take her number...what's up? How long did you stay yesterday?"
Assume the friendship, don't be too weirded out by it. Talk with her as if you're talking with your friend.
Then if you guys hit it off by phone, say something like, "Hey you seem cool...how come
we're not friends yet? We should hang out sometimes...get some coffee or something...but you're buying
"In reality, be willing to walk away from her. If you get needy or attached to hooking up with her, you are bound to
mess it up.
Relax, and focus on doing the things you did yesterday, building your skill so these things don't happen by
accident anymore, but by design.
Mod Edit: Text Removed. Please abide by the Forum Rules.
Eliminating your fear of approach is a great start to developing your skill of meeting women.
Hope this helps,