You're pointing 2 extreme kind of relationships with escorts. I have 2 with the ones I occasionally text, talk on the phone and exchange jokes, etc. I know one of them also has a similar relationship with a frequent poster in this forum because the 2 of them told me about it and I guess he also keeps in touch with other clients.
The guy who "went off..." I've never had an escort freak out on me that way but I've had some who turned disgruntled after I "moved on" and stopped hiring them. I wonder if PNP had something to do with him getting mad with you or simply he assumed the relationship had to be more profitable and that didn't happen.