You Can't Lie to a Pretty Face

Studies have proven that it's harder to tell a convincing lie to someone you find sexually attractive.

This is definitely true. Cause I mean, don't you feel nervous around someone you think is really attractive? I usually get intimidated by anyone whom I find exceptionally good-looking. So if you're already self-conscious about what you're saying and how you look to that person, then you're going to flub up your words when you're trying to lie on top of acting normally.