And it sounds like men in São Paulo need to start doing what women have been doing since the beginning of dating: always letting somebody know where they are, always meeting first in a public place, never taking a drink from anybody except a bartender.
For men elsewhere, it's really good for them to know that women do this, and that this is why. You may know that you're not the man who does that, but they don't, and the consequences can be worse than losing your wallet. Practically every woman knows a woman who has been assaulted this way. Understanding that will help you plan your dates accordingly so that she can feel a lot more comfortable, and you'll both have a much better time.
For men elsewhere, it's really good for them to know that women do this, and that this is why. You may know that you're not the man who does that, but they don't, and the consequences can be worse than losing your wallet. Practically every woman knows a woman who has been assaulted this way. Understanding that will help you plan your dates accordingly so that she can feel a lot more comfortable, and you'll both have a much better time.