I posted this in the online dating section though I think it might be more suited to here so:

Hey all, avid read but first time poster so hello!

I just wanted some advice on getting a girl I met a few weeks back to my party..
I'll give you the long and short of it. This may be a long read but any advice would be a fecking GODSEND right now... also the story contains strong adult themes with drug use so turn away if easily offended...
I was out with a few friends about a month ago, just a normal night out, though everyone I knew was going back to a party afterwards where there would be a lot of people from one of my friends workplace.. at the end of the night me and a friend just went round the club just chatting to various girls, as you do, and my friend started talking to a 3 set.. all fine and dandy, I wasn't paying much heed as I was just floating around doing my own thing... Anyway when he got em outside I realise that one of them is stunning.. a 9, at least. He asks me if its ok to bring em back to the party as he doesn't really know the girl who owns the house. I tell them OF COURSE!
We got back to the party and everyone was getting on really well (could have something to do with the copious amounts of drugs being taken), especially me with the 9.. after a while the host says we should go to someone else's house (which is just round the corner from my own) as neighbours were complaining or some shit.
So I grab the three girls and get in a taxi, who as it turns out aren't from Galway (the city I currently reside) but are on a class trip from Dublin and are staying in a hostel.. so I tell em we'll go to the hostel, pick up their stuff and we'll head on over to mine where they can crash after we've finished partying, we do this. We get back to mine, one of the girls decides to go to bed so I give her the spare room and me and the other two head on over to the party round the corner... Everything's going swimmingly and me and the nine are having some excellent conversations and every now and then we sneak up to a bedroom and do a couple of lines, all the while we haven't kissed but there's serious tension... then she's talking about how I'm so nice and the likes and how she should come to Galway more often!
I say to her that I'm having a birthday party in about 5 weeks, and she and her friends should come up to it! Though there is a strict "hotness code" and she would have to do a lot of "dolling up" to get in... cheeeesay I know.

She locks eyes on me and says "I can't believe I wouldn't get in..."
I say "I might have a word with the bouncers" or something equally as stupid.
Anyway, needless to say we kissed.
Straight away after we break apart she says she shouldn't have done that as she has a boyfriend... but we carry on kissing then we go back down and join the party, every now and then we repeat the process, go upstairs, kiss and a line, back down to the party... for serveral hours.
When the party starts to eventually starts to die down it's just me and her downstairs, and everyone else upstairs having a big chat... I tell her that I tired and she says the same (ding ding ding!) I ask if she wants to head back to mine to "sleep" she says yeah but she should go upstairs to tell her friend we're leaving... bad fucking idea. Her friend INSISTS on coming... she will not for love nor money leave us to go back alone, I mean, this is cock block at it's fucking worst. But since it's this girls friend I can't really tell her to piss the fuck off.. so, defeated we head back to mine...
they leave after about an hour at her friends bequest cause "their boyfriends will be pissed" if they don't get back to Dublin soon, and I'm left there, alone, with nothing but porn... bummer. Good night turned bad.

Anyway's about a week after I spot the nine online on facebook and get chatting to her, we get a bit flirty and she says they we're discussing when to come back over to Galway for a visit.. again I tell her about my birthday. She says yeah!
Didn't have any contact with her for another week or so, then a few days ago I spot her online and write her a message just saying hi but her account times out straight after I send it meaning she's been away from her computer for a while so I forget about it... I'm still online about an hour later but she can see that I ambut she doesn't message me.. I leave it.
Then yesterday I send a group invite to a lot of friends including her and her friends... they've been online since but nothing back.

Basically what I'm asking is what should I do from here in order to get em to come next week? Why have they suddenly gone cold or am I looking into it way too much? How long should I leave it before I contact them asking em if they're coming (party is next friday)? Will I look like a freak if I ask her directly next time I see her online?

Thanks in advance for any advice.. It is HUGELY appreciated!!
medicineboy