Re: Protean's post. Very good points to bring up.
I think introverts can be confused by extroverts and think they've made it into the inner circle when they haven't. This is simply because introverts don't have as much energy to invest in half way friendships. If they are spending a lot of time and attention on you, it's usually a pretty solid invite inwards but for extroverts they have more energy to spend and may take pleasure in your company but not necessarily want you inside yet or ever. So introverts need to keep this in mind. I've been misled and confused by this in the past but sort of think I am coming to understand it more now.
Am I off base here?