Well, not at first, no. You see, there are many ways a person can flirt. It's learning those subtle social clues that will eventually help you along the way. For a woman, tucking her hair behind her ear to a man could mean that she is interested in him, or for a man, standing with his hands behind his back could mean that he's confident and he wants to show that he is.

It's all about learning the basics of body language. It takes a long time to learn them all and watching people is a good way to understand it.