It may sound a bit odd, but there is a certain science when it comes to flirting. No, you don't need chemicals (unless you count alcohol…), but you do need a strategic technique. There are certain things that are scientifically proven gestures and conversation skills that can help you charm someone you're interested in. For instance, something as simple as a smile can reel someone in. Also, while in conversation, try to center it on them and their interests. That will definitely show you're interested in them. Follow these simple rules and, soon enough, you will be a master at the science of flirting.