What happens on field is what it is. Don't let some theory that looks good on paper (in this case in digital form) fool you. Meanwhile, some theories that appear will not work actually work when you field test them.
You can team up with your big girls for the day 2s and setting up the f-close (it's still social proof) but for approaching new girls, you'll have to build propinquity with a few hot girls that you can team up or wing to f-close hot girls with the same or better quality.
Building propinquity with beautiful hired guns can be easy. Just go to a target rich environment, friend zone the hot girls (usually the hired guns) for 2 to 3 weeks and then use the social proof from your propinquity build up to cold approach new girls who see that the hot girls are comfortable around you.
Of course, there are many ways to do it and this is just one way.

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Approach. Open. Escalate. Isolate
Here are my two essential rules on texting that will save you tons of time and money:
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