You did good, alittle fluff talk wih that chick from the facebook. Don't worry about the should I shouldn't I! Your inner game is alittle weak and you'll have to improve it. Don't be so analytical about all of this. Just don't care! It's hard to do that but once you got your mind telling yourself that, "Who gives a fuck whether or not they like me. I'm damn proud of myself and confident to know it!" or alittle shorter version, "Who gives a fuck about if they reject me. It doesn't bother me and it's their loss!"
Also there's different ways to improve your Inner game such as the links below:
http://www.innergametappings.com
http://www.pickuppodcast.com
You can search on Youtube for videos about confidence building, Approach Anxiety, and Inner game. You'll need a good inner game to have a outstanding Outter game.
Hope this helps man and P.S don't think that if a woman is mad orsomething that it's your fault. It usually 9 out of 10 times it's not. If she mentions that you did something to piss her off then realize it. What you're being is indecisive which is normal for most humans. They look at something for example like a cake or a browning, "Damn, which on do I want the brownie, cake, brownie, or cake?"
So what you're feeling is perfectly normal for any one that just entered the game or is still working out his kinks to become a PUA.
Don't focus on one woman also-sarge other girls and meet others as possibly you can. They can be friends, or relationships-just to build up your confidence and make you feel compentence of approaching.
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"Women Love What They Can't Have!"
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http://f4fc0878.linkbucks.com