Hey mate,
I have been in situations like this in the past, before my PUA days. And yes you are right, they do seriously fucked your brain up. The main issue here imho is you making a big deal of this girl and as a result, she's toying with your emotions although I dont think she's doing it on purpose. We scrutinise every single word, sentence, action that she does and yet a lot of the time she is doing what a woman does best - being emotional, indecisive etc.

My piece of advice, just go with the flow with her, keep in contact with her and in the meantime, have a good laugh with your mates. Now you know about this community, go out in the field, find your wingmen and meet more girls. There are so many HBs out and about, it will be a shame to channel your energy and emotion on one (unless of course you are in a relationship with her) and she might not be interested afterall...! I think you get my drift...!

Damned I feel like agony aunt...!

Much Success matey!