Well, the first step is to figure out how she knows the guy. Because guys will be sneaky and try to act as though they are already with the girl. You have to immediately catch if he is some rando by checking with the girl. And then you have to act immediately to blow him out. Physically get in between him and the girl, pull her in close so he is locked out from squaring up to her. Then try as best as possible to ignore him, plow the girl with verbals, and lead her away as best as possible.
It's all easier said than done because these guys will catch you off guard. It's tricky enough to be running a set, coming up with funny shit to say, calculating logistics, dealing with her cockblock friends -- and then on top of that some sneaky guy randomly comes in and tries to steal her away.
The most important thing is to act immediately. Do not give him even 5 seconds to talk to her. Rapid physical escalation is very helpful here because it lets you get so close to her that you can lock anyone else out. Usually the AMOG will only happen when you're not physically close enough with the girl. But sometimes that's not possible. Holding her hand is also important. Don't let her walk around without holding your hand, as guys can swoop in like vultures on a solo-seeming girl.
If you approach a lot, guys can get emboldened by seeing you approaching so confidently and effortlessly. But they are often too weak to approach a girl cold, so they will approach your girl. It's a sort of parasite behavior.

No, unless you're running serious long-term social circle game.
Instagram is too indirect otherwise. You need to be getting her number and setting up the date logistic right there in person as she is giving you the number. Do not get a number without date logistics cleared up.

Maps Of Meaning -- his life's work, a house of cards.
God help him.

Majority of my approaches are: "Hey, I just wanted to meet you real quick. I'm Leo."
That's the foundation for everything. The rest is spice throw into the pot to make things interesting.
If I'm saying obnoxious things it's to build up my own state and break myself out of hyper logical mode. That's my version of alcohol, since I only game sober. Well, I have gamed on DMT to be honest. It's way better than alcohol.

I got socially socially calibrated by saying goofy shit.
You don't need goofy lines. Just approach a hot girl and say, "Hey. You caught my eye. I wanted to meet you. My name is bloomer."
You need to build on foundation of just being totally fucking normal and straight.
If I am saying goofy shit, it's because I want to have fun. Not because it's necessary. I like to push myself to see how funny I can be. Sometimes my sets turn into full on comedy. It's funnier than watching an hour of standup, but I create it for myself. Why pay a comedian when you can create your own and hit on girls at the same time?

A lot longer than you imagine.
Being truly good at game takes serious work.
It's less a function of time and more a function of how many quality approaches you're doing.
But you don't have to be good to get some cool results. You don't have to be anywhere near good to land a hot girl. Luck eventually just skews in your favor if you approach enough. One day a girl will slip on a banana peel and fall on your dick if you approach enough.

Well, you see... You are Everything.
If you're hoping to find something other than you in existence, you're shit out of luck. All you will ever find are deeper aspects of Self.

You need to hit some loud clubs and go beast-mode with physical game for a few months. Every day just practice all kinds of physical escalation until you're totally comfortable with it and it becomes automatic. And also practice sexualizing every conversation.
Physical game is some of the easiest to learn. But it requires practice in the right environment. Once you reach hook-point you can escalate like crazy in many cases. It's eye-opening to see an experienced guy do it. It will blow your sense of what's possible. RSD HotSeat is especially good for showing you what's possible with physical game.

Yes. Looks are mostly in your face/hair.
Plenty of my shorter guy friends do well on Tinder cause they got the right face/hair for it.

Go out and approach.

It is for purposes of attracting girls.
I am not telling you empathy is bad or shouldn't be developed. You just set it aside when hitting on a girl.
You need to be able to turn it off and on contextually. If I am talking to a stripper I am going to turn off empathy because she is a psycho on cocaine with daddy issues.

Yeah, actually.
Fuck her with your eyes.
I'd had girls text me, "Omg, the way you looked at me when we met."
I've had girls tell me, "Woah! Way too sexual eye contact" and break it with her hand.
See through her soul.
With brilliance and love behind your eyes. Fearless eyes. The eyes of God

Actually it's one of your #1 problems.
But the deeper problem is the fear, discomfort, and inauthenticity in you which prevents you looking at her properly.
You cannot fake this eye contact. It requires rock solid inner game that takes years of going out.
You are too stuck in your head to have the eye contact I'm talking about.

I saw him out tonight. He runs and teaches elite social circle game in Vegas.
Elite social circle can certainly be very powerful. Sartain is basically running status game.
He makes some good points. However, pickup definitely works. Rapid physical escalation definitely works. And how are you gonna build a massive elite level social circle without pickup skills?
An incel has no way for building a social circle of hot girls. He would have to spend years going out and socializing with hot girls and becoming very charismatic and socially calibrated. Once you got pickup skills talking to girls is easy so building a social circle becomes pretty easy. Of course by that point you probably don't need a social circle because you can pull consistently. Still, some of the hottest girls you will only get through playing the status games. The hottest girls love status more than they care about your cold approach.
Lack of compassion is certainly a problem in the PUA community. The community tends to attract sociopaths because that's who the hottest women sleep with the most. Empathy is not rewarded in game, it loses you lays. Women are not attracted to empathy, regardless of what they might claim.
Yes, much of the way pickup is taught is toxic masculinity. Pickup tends to attract a lot of sleazy guys because it is taboo and hardcore. Many guys who get into pickup spend most of their lives thinking with their dicks. They have low integrity and will not hesitate to cheat both women and men alike. The funny things is, men get cheated by PUAs as much as women, because cheating is a way of life.

Been listening to this guy this past week and its been mind-blowing to see his perspective on dating and whatnot. 
 
He gets a lot of his ideas from David Buss (n American evolutionary psychologist at the University of Texas at Austin, researching human sex differences in mate selection. He is considered one of the founders of evolutionary psychology.)
 

The right wing has been holding back action for decades. Look at how much money was wasted in the Middle East.
Most of America's left wing politicians are actually moderate conservatives. And they still can't get shit passed because of far right obstruction and bullshittery.

Cause you got more shit to do.
Time crawls when you got nothing to do.

That's what psychedelics are for. They dissolve distinctions which you cannot normally do in your default state.
If you could dissolve material distinctions at will, physical reality would melt away and you would think you've lost your mind. This is what people call insanity. So there's a good reason why you cannot do it. You are treating this stuff as if it's a game when it is as serious as losing your mind and your life. People who do this wrong end up jumping out of a window because of course there is no difference between life and death other than what you're imagining.

Welcome to survival

I found lifting translated the best when I had to move apartments.
But that's like once every 5 years.

Definitely exercise.
There's also nothing wrong with bulking up a bit. I plan to bulk up some in the future. It does help with girls. Just don't make it a substitute for game.
I used to be 15 lbs bulkier than I am now.

@Ineedanswers That's just a well-tailored shirt. I still look like that in the same shirt.
Tailor your shit.
Like I said, you won't really see msucle on my frame unless I grow 30lbs of it.

You don't need to keep playing hard to get once she's your gf.
The point here is simply not to over-invest in her because she's not that invested in you yet. It takes time for a girl to get invested. Hence the need to play it cool at the outset.
This is really just a tactic to thwart your own neediness, which repells women. And the less girls you sleep with the more needy you will be, so be careful. Once your dream girl comes along you'll probably be needy as fuck because you were saving yourself for her.

Keep setting up meets with her, but don't do or say anything special or serious. Just keep it playful and exciting and give her good sex. She will fall in love with you soon enough. Do not bring up being her boyfriend. Just be chill and give her good sex.
The key is to not come off as needy or desperate, and not to place her on any kind of pedastal.

Like I said, girls will use you to entertain them, with no intention of hooking up.
I went on a date with a girl once who had a boyfriend. She was just bored and lonely cause her bf was out of town. She wouldn't sleep with me but she made out with me.
It's not uncommon for a girl to use you to pump up her state and have fun, but then announce she has a bf once things start getting heavy.
She wants to keep her bf and have fun.