Flirting is an art in and of itself. I'd say it's a new, modern form of art, as before the twentieth century, there wasn't much room for flirting. But now it's all we do. We flirt with the policeman who dared stop us because we were on the phone while driving and he ends up by asking for our phone number. True story. We flirt with the guy at US customs so he doesn't give us trouble because of our Lebanese passport and he ends up asking if "you need someone to show you around the city?" True story. We flirt with a teacher because we failed an exam. We flirt with the bartender because we want to get two seats on the bar and it's Saturday night. We flirt with the bouncer to get us into Skybar, we flirt with the DJ to get him to play "our song," and here is the magic of it all: girls flirt all the time, pretty much to get anything. Guys on the other hand, mostly flirt for one purpose: getting laid.
Here's where it gets interesting: make a guy think he has a slight chance of getting some, and he will pretty much do whatever you want, within the realms of reason. And sometimes way above.
Now every girl has her own flirting strategies. I have a friend whose tactics involve breaking a guy down. She basically stands there and verbally attacks him until all he wants is to take her to bed. She calls him an idiot, she mocks every other word he says, she puts herself up on a pedestal and boom: the guy is bending backwards and forwards trying to make body contact. I was actually getting uncomfortable by her harshness, but he said it made her "interesting." Go figure.
Another girl I know will always make a guy feel like he's the most amazing man in the world. She will laugh at everything he says, open her eyes wide when he mentions he works in private banking, she will strategically place her hand on his chest several time during the conversation and bam: the guy wants her to show the same kind of attention to the part of him growing in his pants.
Flirting is fun. And when you're in a relationship, it's something you miss. Remember that episode of Friends when Chandler tries to flirt with the pizza delivery girl, and Monica says she's not jealous because she flirts with guys all the time? We flirt all the time because it gives us a sense of validation. I flirt, you respond, I feel like I still got it. There is this guy I know who was sick for several months, and as he got better and his looks came back to normal, the only thing he wanted to do was test his flirting and see if it still had the same effect. He left his girlfriend because she couldn't give him that validation.
It's too bad we forget to keep flirting with our boyfriends. Make him work for sleeping with you tonight instead of having sex on the dot like it's part of a routine. My aunt, who has been happily married for 23 years says she still flirts with her husband every day. And what happens? he flirts back. Moral of the story: keep treating your man as if he wasn't, and you'll live happily ever after.