I never used my FB account for setting up a game, however this trick worked most of the times!

Find an HB (check her pictures first ofcourse), then see if you have any mutual friends.. Poke her firstly OR don't, send her a PM asking the next..

E.g., I saw this HB8 called Ashley and poked her, she instantly poked me back and I send her a message asking if she isn't Ashley from school X (you can even use fake names, who cares), then she'll reply yes or no and whatever the outcome is, build on that.. There you have your opener this rly worked! They start adding you and just continue building up your game.

One chick replied to me by saying 'no im not that claudia, im better ' there you go, she flirted firstly so she's def. open for convo!

The reason I ask to see if you have mutual friends is that you can talk about them as well, they'll feel safer to know you know any of their friends too.

What I also do, I ask if shes relatives with person X (may be fake as well), she'll reply yes or no, and build on that....

Hope this helps for you guys as well!