Alriight Henley,
the way it seems, you've got this one in the bag..
however, don't show up on your own and act like an old friend, you are there as potential boyfriend material, not a friend from primary school.. and besides, you might really dislike something about her (unlikely).. and then it just makes it awkward if you have to excuse yourself..
next time invites you for a drink with her mates, bring a wing - this gives you a reason to isolate yourself with the HB9 and hopefully sell your wing to the flock of burds surrounding your target (he'll be forever greatful if he gets a shag out of it too!).. try pick a mate with a sence of humor, also its sublte DHV, it shows you can picks good people to be around..
i dont reckon you have to game her, she already likes you and if you start pulling out routines like "The Cube", and magic tricks - she's gona think your weird.. not acting like yourself.. you can do little things which engage kino, palm reading is a good one..(google it if you don't know it)
just be genuine, confident (you arn't unsure about your looks.. your an athlete!!) and establish comfort (and kino) - making the path for a more heated conversation..
Inviting her out with her friends is good for her because it protects her having friends nearby.. charm them - and sell you wing to them.. so i don't suggest you invite her to yours - it leaves her in a vunrable situation.
But!, at the end of the day - she is into you, 6months is a long time to get to know someone.. and she is inviting you to be in her company.. it doesnt get easier than this!!
ALSO! a little trick, when making sure you smell like a greek god of aftershaves, dab a little bit around your ears.. if you find yourself in a loud place, shes gonna be talking into your ear and being greeted with a divine smell

and seeing as the ear has no sweat glands - the aroma stays for longer
