He's full of sh*t. Nobody is out of your league. But if you think it, it will become a self fufilling prophecy, she will sense it subconsciously and reject you. We share our emotions and influence others subconsciously all day. You walk in a room joking and laughing, being sociable, and pretty much anyone you meet will vibe off you. If you're moody and sad, people won't want to talk to you because you'll bring them down.
Same with a hundred other moods. Including being horny. As long as you don't break any social taboos, that rubs off on girls too.
If you walk up to her feeling like you deserve her, that she fancies you, then your approach and conversation will reflect your image of yourself, she will pick up on it, and likely find it attractive. Whether that's enough on its own, who can say. But I can tell you that if you're buckling up internally, putting her on a pedestal, making a big deal of every interaction, feeling like she'll almost certainly reject you because you're not good enough for her, then she will also pick up on this, find it unattractive ...
... and then the only way she'll give you a chance is if you can give her something unique that she wants... like a fast car, hard drugs, or an enormous cock.
And that second place is a pretty depressing way to see your interactions with women, right? It's also, I believe, the way many many men do feel.. I mean look on this site how many guys are paranoid if their cock is big enough. Because they think it matters. They maybe think that this is all they can offer a girl. That it's a replacement for genuine attraction, since they couldn't possibly achieve that.
Now if you allow yourself to be in that second place then yes, she will be out of your league. But do you see what I'm saying here, she's not emprically out of your league, just like any other girl, because of any reason other than your own image of yourself.
I am an average looking guy I guess. Not deformed, but no supermodel either. According to typical ideas of "good looks" I'm tall, which is good, but quite skinny which isn't. I'm blonde, which is good, but quite pale and can't tan, which isn't. I wash and smell nice, which is good, but my teeth aren't great, kind of off colour from smoking and coffee, which isn't. But when I talk to women I believe that I am attractive to them, and you know what, I've been told a lot more often since taking that view. I know I am a good lover, and I know I can show any woman who wants to find out an amazing time they won't forget. I might not be their biggest (unlikely) or their best, but she'll remember, and want more. I don't say this to people I meet, but I believe it.
When you believe in yourself it shows, and it makes people you talk to curious as to what's so good. Your self image is the only thing that holds you back.
Furthemore, when you believe in yourself, you don't fall into honey pot traps like this so easily either, because you know you can get other, maybe better opportunities elsewhere if it doesn't work out. And if you believe that when talking to a woman, so will she. And crucially, you will.
Ryan, this isn't all necessarily directed at you, I just kept rambling ... I do that ... but I thought it was worth posting it all anyway.