So if the guy had bought you the toasted coconut coffee instead of talking about it, he would have seemed less of a weirdo?
Over here guys sometimes try to buy women drinks but it is often seen as a bad thing too. Women here want to be financially equal to men and want to buy their own drinks. I have found it's easier just starting conversations about innocent subjects and see where it leads. If there is chemistry, great. If not, at least you didn't sound like a creep. Tho I do understand it may be odd if someone starts talking about a coffee three times, maybe he is just hoping the conversation would develop to other topics aswell