How can you tell if a girl has faked an orgasm

ive seen so many girls say they fake them majority of the time so how are you supposed to know if it’s legit or if it’s fake

Some of those girls are clearly lying! And also they can only fake it if the guy is not paying full attention to the girl's needs and behaviour!
Think about what happens when a girl is really having an orgasm. She loses " control" everytime and if you observe her carefully you will be able to tell that she has. Some girls, about 30% can't have vaginal orgasms from penis penetration alone no matter what you do with your c..k, and some feel guilty that they can't and that's because they don't realise how common this is! So they fake it and, to be honest, some guys are utterly clueless while thrusting themselves to heaven! lol.
And one more thing: if a guy has mastered the art of oral sex how on earth could a woman keep faking orgasms without him knowing? No chance!
So understand the woman and learn about her!

30%? Oh ho ho. Sources and studies vary. But 75% never orgasm from vaginal intercourse.

ive seen so many girls say they fake them majority of the time so how are you supposed to know if it’s legit or if it’s fake

You don't.
https://www.youtube.com/watch?v=lNEX0fbGePg

Just as a woman may not know if a man has faked an orgasm - especially one wearing a condom.

All you can do is try to give your partner as much sexual pleasure as you can. The vast majority of men are poor to mediocre at this. It's not difficult to become better than the average median and average mode man (or woman) in bed. It just takes the right attitude, a bit of time researching it and some practise.

And is any one really telling me that if a guy puts his tongue on a woman's c..t that if he is half awake he wouldn't know if anything happening is fake or not?

And also they can only fake it if the guy is not paying full attention to the girl's needs and behaviour!

It’s so sweet that you think this but no, sorry, you’re wrong. Women know their bodies and know how they personally behave when orgasming and can usually pretty easily replicate that.

so, OP, sorry to tell you but the answer is you can’t. What you can do is make sure you ask the person you’re sleeping with what they like and follow their instructions. Even then you don’t know if they’re lying necessarily, but at least you’re trying.

Are you a female who has actually had an orgasm? A woman cannot properly fake something that is actually involuntary.

Yes.

And, again, yes they can. As I said: knowing your own body and reaction, it’s actually pretty easy to fake.

No. Not if i actually know you well having slept with you reguarly, for say,six months. When you " go over the edge" what actually happens in your abdomen that you can feel and see? And can you stop it happening?

In your abdomen? Really?

Im not arguing that something involuntary happens when you orgasm (not in your abdomen though...) I’m saying that actually once you know what that feels like it’s pretty easy to replicate it - not the feeling, obviously, but the physical aspects - even down to, say, the exact timing of vaginal constrictions.

Obviously I know it’s fake, but the person I’m with wouldn’t. And yes, I’ve done this with people who have regularly actually made me orgasm and no, they couldn’t tell.

They are absolutely clueless and definitely you shouldn't choose those ones for a longterm permanent relationship. You are telling me that a guy, after he has been reguarly sleeping with you for say 6 months including skilful oral sex with you (without being too explicit about the exact techniques), would not know if you were faking an orgasm? And those people who believe that guys can fake an orgasm and the alert woman would not realise - now that really is totally ridiculous!

Are you a female who has actually had an orgasm? A woman cannot properly fake something that is actually involuntary.

I don’t really want to go into this anymore. Yes, that is exactly what I’m saying. You know, sometimes it’s just not going to happen for a variety of reasons and sometimes I think it’s better to pretend that not.

So in definitive answer to the OPs question: sometimes you don’t know, but it’s not worth worrying about unless you’re being selfish.