No, never.
My favourite always calls me "cutie", and is very good at pretending she fancies me, but I know better from the way that women have rejected me all of my life that I'm no oil painting.
I'm sure there's plenty of SPs that have viewed me as a good client, or a nice guy, but none would ever give me a freebie.
More often the opposite, in fact. I'm aware that they're waiting for it to be over. I'm sure some SPs may genuinely fancy a better looking punter, and searching on UKE I managed to find some examples of this....but not me, and I don't let it bother me