I think that, most of the time, when a client "falls" for a provider...he's falling for an illusion of passion, a persona that is consciously projected, because we know that this is who you'd like us to be during "your time..." Time that you have paid us for.
Depending on the (gfe) skill level of the provider, this illusion can feel overwhelmingly real...but the only real way to determine if it's an illusion or reality, is to ask yourself... "Has this woman ever voluntarily met with me on her own time,
without compensation?" If the answer is no...
There are those that will fall for the illusion and ignore all obvious signs to the contrary. There are those that will say that this horrible, wicked wretch "used me for money"...and she might even counter with something like, "Well, he used me for sex." I think there's a name for that. It's called "the Hobby."
Bottom line...if you think you've just met the girl of your dreams at a hooker convention, you're probably in for a very rude awakening when she refuses to don an apron and bake you some homemade chocolate chip cookies.
Know what to realistically expect going into it...and you won't be disappointed. We're all there for the moment, all with our own motives. P4P is (usually) just not the stuff "forever" is made out of.