I am not a PUA, but I am not an AFC either. However, I am trying to adopt a PUA mindset, which has helped my interactions with women. This is why I like to ask questions of how people who are into the PUA lifestyle more seriously than me would act.
So the scenario:
Yesterday I'm on a bus to uni with a female friend (who we flirt the shit out of each other, but anyway, that's not important now lol) and she happens to stumble across 2 girls from her highschool, so naturally we're in conversation for the 15 mins or so that we're there. One of the girls is an 8 or so and one was a "UB". Anyway, I'm not gaming or anything, but just being my regular, casual self with a touch of C/F thrown in just cause I can.
So the next day, I've got a Facebook req from the 8. I take that as an IOI, considering we met for no more than 20 mins and she must have had to specifically go find me from our mutual friend's profile. (Another IOI I took was that after she left, she came right back to ask my name, before leaving again

)
What would your course of action in this scenario be?