The main problem is that in the "community" a common thought that is spread widely is that girls don't respond well to you liking them. Not so. They just don't like you liking them more than they like you.
The majority of girls actually fall quite hard for a guy, quite quickly and when he's matching them in kind, it goes even faster. This is what most guys who get laid a lot do. They tell her how special and amazing she is, and how he's falling for her. They have numerous(and brief) love affairs where they're caught up in a whirlwind of passion and it dies just as quickly as it sparked.
This "feign indifference" stuff, comes from a particular type of "tough asshole" guy, and works with a very specific type of drama seeking girl. These girls are vastly over represented in the club and bar scene, and so it's better advice in that context. But in real life, with a correct representation of women, it doesn't hold out well. Most girls respond better to what your friend does, than what the tough asshole does.
The reason that baiting her into chasing you can work, is because she doesn't really want you much at first. Your friend however, is someone she wants right from the start.
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Quote:
Build an emotional connection through your hard throbbing cock.
Build trust and comfort by holding their hands and covertly rubbing your elbows on their nipples.
RSDTyler