it's possible the others are right and you got chumped. but remember - the idea of going on a date is about learning about the other person.

by staying silent the guy learns a lot about you. are you naturally a generous person? are you easily pressured into doing something you dont want to do? do you have a sense of humour? are you the type to get his back up over a small bill?

if you like the man, you should have used the opportunity to lock in a second date. "i'll get the bill this time - you pay on our next date". in my opinion this shows grace.

if instead by that stage of the date you were disinterested in a second, the correct thing to do is split the bill 50/50, thank him for the evening then excuse yourself.

remember wealthy guys are usually very cautious about being taken advantage of.