Poshy....you need to get one of those sandwich boards and put the rates on it when you go to a bar....
1 Cheap drink.........................you get the time of day
1 Good drink..........................5 minutes of chit chat
1 Rep Birkin............................A massage at the bar
1 Gen Birkin............................A massage....WHEREVER
1 Four whell drive Porchee......

Bidness is Bidness.........

Hey you made it clear up front you were with your fiance..... the buyer is the jerk, for making a scene.
Personally....I have bought drinks and gifts, because I wanted to. I never expect anything in return.