How do you know when a boy is flirting with you?

Coz there is this boy that I have a massive crush on but he is already dating some one [but their realationship is not going well so I have a chance]! But before that he was flirting with all the pretty girls [that includes me] in my class! And I didn't even know!

So now I don't know what to do to get his attention and know when he's flriting with me so I can flirt with him!How do you know when a boy is flirting with you?
man that is a seriously great question..because im totally clueless when it comes to these things..a boy ive liked for like 3 years complimented me twice, we get caught staring at eachother, and he makes me laugh a lot...and i have NO clue wth all of that means..im dieing like this whole summer...sorry to spill like my whole life story..lolHow do you know when a boy is flirting with you?
flirt with him on msn, but watch out for his other girl friend because that is a bit nasty ! maybe wait until they break up, or jsut start with some slow talk to the boy you fancy and see how it goes :) good luck x
well flirting is very broad maybe u should of like told what he was doing and it would be easier to tell but like u can kind of tell if someone likes u i mean its not that complicated but u can flirt anytime even if he isnt flirting with u lol
FLIRT WITH HIM

HES PROBABLY JUST A LIL PLAYER IF HE FLIRTS WITH ALOT OF GIRLS IN UR CLASS..BUT HEY! PLAY THE SAME GAME BABY BOO...AND PLAY IT BETTER! DONT GET PLAYED
Well, there's a lot of signs that you can use them to find out if he is flirting with you. Boys flirt really strangely sometimes, but in the most ways we could manage to discover whether they flirt or not, like for

example:

- he tends to be very close to you, even if it's only a few inches of you.

They really don't bother with that and they like to be close to you, so

that they can have a better chance to actually flirt with you

- Smiling is another sign.If he is smiling with you, while talking to you at the same time, for no reason at all, that's something HUGE!!! And by that I mean smiles that don't fade, because if they don't fade quickly when you are looking at each other, then that obviously means that he is interested in you!:)

- The person who likes you or is interested in you , he will keep you in

his range of sight without even knowing and try to look if you are still there.

-Be aware of this: he could be ignoring you one day and then the other

day he will smile at you again and act like it nothing happened.

-his shoulders and toes are very important, so keep them in mind, if they are pointed at you , no matter where he is , is it with you or other people, that's a good sign too.

- take a deep look when he is talking to you( not too obviously, of cource) or secretly and see if his eyes, or more literally, his pupils , change their size, from smaller to bigger, that's a really good sign that he is interested in you.

So these are the most important signs that shows if he is interested in flirting with you or even likes you and you didn't mention what signs he

gave it to you, when he was flirting with you, but let's just suppose and

if any of these signs match than it could be a very good chance he is starting to like you or is intersted in you, in some way or another.

But boys are a bit confusing and you must be prudent sometimes with

them, but sometimes you can just let go of all that with the flow mostly

because they can give you ( if they want, that is) the pleasure to

watch them flirting with you and grasping for your attention more and

more, everytime. But, if by any chance they notice that you haven't

really paying attention and not even smile at them, once in a while,

remember they can get easily bored and besides noone wants to

be with or around a girl who's acting too strange( by that I mean, that you must show off your best qualities in flirting and sometimes you

have to fight a little for their attention, because boys like to chase girls,

but also will love to be chased, like any girl wants it too) and even when you are feeling a bit of shy, you must bite your tongue and act all sexy and stuffs, because when boys notice that they sacrifice ( and by that I mean flirting and trying to get you) too much and that is worthless, they can easily move away quickly and run in the arms of another girl who actually was making the effort to not acting so cold with them and flirt with them boldly for a while. Yeah, I know that's scary, but that usually can happen sometimes and we are NOT gonna let that happen aren't we, so I am gonna give you some advices to act a little more boldly and flirt with them ( and with that boy you like, of cource)and show them what are you capable of doing( I am not thinking of pleading him or stalking him, no way) by acting brave sometimes and like I said that can give you an enormous pleasure by watching them play hard to get your attention in any possible way ( and even acting stupid sometimes, if that happens don't keep your smile off, laugh if you want of their foolishness, because I know it's very funny) and I know from my very own experience that if you show off some of your fliritng skills ( because everyone has them,you too, depends on how you are reacting) and with that it's a dead end for him, so the only way for him is to run immediately in your arms ( for a hug or a kiss haha;) so here are some advices for You, showing you a little, how to flirt:

- Play with your hair , boys love it and it never gets old, so whirl your hair, by looking them boldly in the eyes and then show off your best smile you can get.That helps a lot, because that is a great way to guys to find out you are in some way interested in them , so they like it a LOT :) believe me!!!

- You' ve gotta look in them straight in the eyes and meet their gaze and then when you do, I mean when you get his attention, you

will put on your sweetest smile so they can melt inside of them and out of it and then hold on your gaze for 3,4, 5, or 6 seconds at least and don't you dare to keep it a little more, because that could very well mean that you are acting weirdo in some way and they could think you are a some kind of stalker with that strange staring in their eyes( and I am NOT saying that staring isn't good sometimes, but in this case,your first gazes with him should be very softly and then when you will move on, on some other level and feel more connected an