Well Kelly I do feel that a long-time provider of the client can show love and appreciation.
When you share some laughs mixed with good sexual chemistry, the recipe is there for a certain relationship to evolve.
Of course, it has to remain within certain boundaries. Sometimes the client can accidently fall in love with his ATF and have to withdraw from seeing her for a period of time.
However it's those special providers that make the hobbying so magnificent.