Oh I know the type - I met a girl like that about 6 years ago - and she, like your ex, had just come out of relationship.
It's the "in love with being in love" girl. It's just as common as the "I can't commit right now - but I really like hanging out with you" guy.
Both suffer from the same fundenmental problem - They are not willing to comprise their given take on love (I'm looking for someone who can handle ALL of me - I just haven't met the right boy/girl yet etc.) because when you get down to it, they are control freaks. If they aren't able to "handle" the situation excatly like they want, they'll feel really vunerable and uncomfortable. You can compare it to comfort-junkies. Place them in a situation they have no control over and they'll freak out.
But even more so, it's like bad junkies - who ends up getting addicted to being addicted, they fix ceases to be what they are chasing, it's far beyond that - instead they become addicted to the rush associated with getting the rush. And then the bad cycle hits in. They can't cure they're need for drugs, because that's no longer their only addiction. Just like the "in love with being in love" girl and "I can't commit right now" guy, are more concerned with the whole situation than the actual person they are getting their love-fix from.
Yes, I guess she's the "in love with being in love girl," although she has a very specific idea of how life is supposed to be. It's like when you're having sex and you're so passionate that you're thinking "we're gonna do this ten times tonight," even though you know you'll be quite sleepy when you're done with the first time. I think she's like that with love. She's so passionately in love that she desperately wants to be able to continue everything after the passion inevitably dies, but she just can't maintain it.
Me, I'm often the "can't commit right now" guy you also described and I guess that was part of the problem for us as well. But I feel as though even if I were a more experienced and passionate boyfriend I still wouldn't have been able to live up to her standards once the passion wore off. One year ago she wanted kids running circles around us, and now everything between us is just barren.
And I still say this angle is ultimately pointless. The whole expanse of human existence is just protons, electrons etc. Saying so is like telling the same thing to a man whose house is on fire. Except that's a pretty fixed set of chemical reactions, and chemistry might actually help. Which is my point, when something is THIS COMPLEX a chemical problem it transcends mere chemistry. To put it another way, trying to use chemistry as the answer is like telling the average man in the street to drive in realtime, using binary.
I agree that Checkpoint sounds as if he dodged a bullet. However, I'm a believer in the notion that if it feels like a situation sucks it probably does on at least some level. I'd suggest you're hacked off because at some stage she has to grow up, and when she does she'll be pretty cool. But you won't be there. The good news, as I finallly worked out a couple of years ago, is that all the things you liked about her... other women have them too. Whether its eyes, a passion for hockey, you name it. And what's best of all is that those other women will have unique new traits to make up for any you miss. Like the ability to mix really good drinks, or DJ, or cure cancer.
And now _I_ feel better. I'd almost forgotten that.
That's precisely what disturbs me the most.
Good feedback people!