Correct, this is to impose and ensure ethical manners in the busniness world, even though the intentions may be well it still may lye other intenetions. which may not be approbriate. However espically when taking one to dinner, I think it should be allowed to at least be able to pay for there partners dinner as well. This may lead to some strange conversations and thought after the meal. But for the sake of ethics it would be understandable.