I'm kind of thinking like kcjbc58. As in, in theory and in fantasy, it's an amazing idea to have. But in reality, I think it wouldn't be worth it, unless you're Charlie Sheen rich. It's possible that someone as a great bond with a girl, and maybe they could be like a girlfriend for a trip, as in always by your side, holding hands, etc. But honestly, I think it may be more trouble than its worth. Negotiate, certainly, and we may all be pleasantly surprised.
I've been shooting the shit with a stripper at a local club for a while now (I came in one day flat broke (ex wife)) and got a beer and accidentally let some tears out while I was bitching about the ex, and the girl just talked no pressure. I compensated her for her time, but I've never got a dance from her, I'll tip her on stage, otherwise if she doesn't have regulars, she'll come shoot the shit with me just 'cause we kind of developed some weird bond. I call her my therapist. I'll buy her a drink if she asks, but she's never taken advantage of me at all. I don't talk to her outside the club, but I also don't see other dancers either.
Point is, we're all human, we all form bonds of various ways, and the trip might be a beautiful thing. Talk with her about her expectations and yours, and see what happens.