Well to answer your question...
You should have no doubt she is down for you still. THe question is how you should handle it. Again I suggest a 3 way
Now to do that I would suggest you tell the girl to really suck up to your current girl, get real real friendly
THis girl has to love your current girl for it to even have a chance to happen.
Metaman is the expert at these things though. YOu should ask him