Dallas PUA

well, very little attention has been paid to situations where a guy gets an AI! You may now say ''it's already done deal'' or something like that , but “The hardest game to win is a won game”

Could you recommend some readings (or eventually audio/video posts) which give some nice insight in approaching after recieving AI (Approaching invitation) ?

I mean, tactics must be somewhat different, i can't approach and pay less attention to her and more to her friend or a group in such a situation! In these situations, after recieving AI and approaching, girl isolate herself automatically from a group, which makes standard opening tactics (neg by paying no attention to target), useless.

so, how do you react in situations like that, and what are your routines in those cases ?describe an appropriate tactic / behavior in these situations ?

If you follow the M3 model, I think it would just mean that you can open with anything (such as "hi"). Attraction should be minimal, you can pretty much skip or assume attraction (you'll be demonstrating important attractive qualities later on, in comfort). Go straight to qualification. Find out about her and what makes her unique. If she jumps through big hoops, you're straight into comfort and your job is to establish a connection. Routines are much less help here. You need to actually connect with the girl.

It's basically the same as a normal cold approach, just some of the phases are greatly accelerated or simplified.