How can I flirt with him to show him I like him?

I'll be surprised if anyone else reads this whole thing, and in all honesty...I just skimmed through it. I'm 21 years old, with enough of advice to give to you. I know you DON'T want to hear this, but flirting with someone who has a girlfriend, is really bad on YOUR part. If you know it's wrong, than why do it? That's only making HIM look even worse. Now, if he becomes single though than make your move girl. Just be your sweet self, and talk to him. If you want him to know that you like him for future references (haha) continue talking to him. When you're with him, just give him those eyes that quickly gaze at him. When ya'll are talking, be sure to just use a lot of body language, and pay attention. Don't ignore him, or pay someone else attention. Touch his arm a little, brush yours up against his. It's kind of hard to TELL someone HOW to flirt, rather than SHOWING is much easier! -- Hopefully you'll do the right thing, and move on to someone who is single, and will give you more attention, because this guy might sound like he's a player if he's got a girlfriend, and is flirting with you. Plus, you could be called a home wrecker, whore, whatever girls want to call each other these days, it's pretty harsh. Just be careful :)