I have slept with girls for free and I have given money too, over the years I have been going. (First time when I was 20!)
But the decideing factor that I have always done is offer them the normal money, before they leave.
If they give it back or slap you, then it was a freebie! If they take it, they were doing there job!
Even when I was younger (and smaller), 8/10 would take the money. Its got higher as I got older......... Although according Dodger I may have a sponser!!!!!!!!!!!!
Just dont be so niave as to think with one visit to Thailand (Or any other different p4p scene) that because they dont ask, they dont want. It is normally there shyness coming through, not the 'LOVE' for you. As other have stated before, yet it seems to be repeated on this forum 5 times a year.
But of course it depends on where you met them. In a beer bar, Farang Disco or a tourist orientated place, then they will want at least some fianicial 'help'. If it was at a Thai orienated place or if they are rich Thai themselves, then they probably won't.
Im bored of this thread now. Someone close it please!