Get her number and see where it leads. I mean the worst that could happens is that she says " let's just be friends " in which you would reply " but i already have plenty of friends " or something witty like that. My point is, grow some balls and quit being so AFC. If your gonna game her. Game her. What's so hard about that lol.
Here this is my facebook opener:
" I'm trying to lure girls back to my house using candy, which do you prefer: M&M's or Skittles?

"
Get the convo rolling. FB # close
"You seem really chill, I'm almost tempted to ask you for your number. Say, we both just so happened to want to stay in contact with one another, how would we go about that?"
SIM-PO !
If you need anymore advice PM me, i'd be happy to help
- Katon