Pete,
What on earth were you thinking? If a middle aged guy like you interacts with younger, good looking women on holiday, he has to keep his wits about him big time. In Pattaya, of all places, one has to keep his wits about him so much more and move things along very slowly.
The 'take the bar out of the girl' cliches that you read on here and other forums are only as relevant as the situations/relationships that the participants create. If you are looking for a partner, it's all about finding a sane girl. And you are at least as likely to find one working bar who has been left high and dry by her immature Thai hubby as you are likely to find one from an affluent background who also feels the need to look outside her culture for a partner. Any farang with long-time experience of Thailand will tell you about horror stories they have first/second/third hand experience of with with girls from all types of backgrounds from this place. You have to take your time, and not rush into things. That means giving any girl you feel you may have a future with time to prove herself or to self-destruct.
I have seen too many guys rush into relationships with younger Thai women from all sorts of backgrounds only for things to turn very ugly when things have progressed too far and too quickly to get out cheaply.
Slowly, slowly.