Search Results: girlfriend flirts with another guy

So this is going to sound kinda crazy but here goes. Just for reference I'm 27 she's 26.

So there is this girl I know, I've known her for a more then 8 years but we have never really hung out at all, we are in a similar social Circle, we know that the other exists but don't really interact. We get along and flirted slightly But she flirts with everyone so I never took it to heart. I also most always had a girlfriend and every girl I was with didn't like her for one reason or another. She is pretty, but I didn't really want to get close to her because she is the type of girl that thinks guys should spoil her. She uses her looks and In return she is a bit "loose" with her body, she doesn't hide it. It's been years since we talked and I've been working a lot at a new job for the past year and half so I haven't seen anyone besides a few close friends.

This is the crazy question.
This new year I finally earned paid vacation time and I plan to go to a tropical island and party. I have already booked 2 plane tickets, Resort for 2, etc. It's already all paid but my friend who is going to go with me canceled.

I had recently seen some Facebook posts about how she wants to go to somewhere tropical. I had the really random thought of thinking of inviting her, I have a good amount of money packed away for the trip itself. I honestly wouldn't mind spoiling her a bit and if I'm honest hoping for something in return. Remember she likes getting spoiled.

For some reason the idea of running away with someone I hardly know for a week on a tropical island without telling anyone sounds oddly appealing. Is this a really crazy idea?