Can you always tell if someone is being deceptive or untrustworthy? How? Some people are so good at hiding themselves and their motives. The person who lied to me comes across as friendly and open. He laughs a lot, is engaging and everyone likes him. He's popular and charismatic. But he lies about absolutely everything. And almost no one knows that.

So, doesn't it make sense to continue to check people out? To only take people at 'face value' would seem to be naive. Although I do that myself and then get hurt later because I trust.