Maybe I could shed some light on this from my perspective, being an emotionally unresponsive boyfriend in the past? I honestly only read the first page and skipped to the end here so I'm sorry if I missed a few key details.
The first months of dating are great, I try my hardest and the girls I have been with usually fall in love. Hard. Not even trying to talk myself as some kind of awesome guy, I'm clearly behind the maturity curve of most 24 year old guys my age.
For me, it was about having a good time at first. Then I get the love yous and the I want to marry yous. Usually after a couple months. Okay, so maybe I've dated some girls that have some issues in that department. But for me, hearing that was kind of cue to "let up off the gas" so to speak and not try so hard. The false comfort zone. When the attention goes from every day and trying to not nearly trying at all, the girls notice that and get very insecure.
Then we go about saying it's all us, you are great, don't change. While you obviously aren't perfect, but what we guys are saying it could very well be true. I have such a low self esteem, I honestly didn't feel worthy of such a great girl. My sex drive plummeted as well. And I know it's really hard not to take it personally, but you have to try your best to maintain your confidence that you are a worthy person and that if you are getting treated this way you have to really give him space to be on his own. I really needed space on my own, I just didn't communicate. Period. She would try her hardest and I would slowly lose my feeling for her and then I would dump them if they haven't dumped me already and it's a horrible way to treat somebody. Drag them through the mud like that. In all honesty, I didn't know any better. I never really self reflected or ever wondered why. For such an attractive and intelligent guy that you were with, I imagine girls came to him pretty easy.
And even they can be clueless and dumb about things as well.
I finally woke up and got my shit together when my last girlfriend just dumped me on my ass completely. When I honestly sat down and thought about it and really appreciated her (although I was incredibly emotional at the time trying any way to get her back) I started to kind of look into my issues and tried to figure out why I was so depressed, why I didn't feel worthy, etc. etc. True, I had some childhood issues growing up and I wasn't really learning anything from my past relationships. What I think he needs is to be on his own to really figure things out, figure out what he wants, and from being on his own long enough to really appreciate having somebody. After not being single for longer than 4 months since I was 15, I have been single for over a year and it does feel great. Okay, so I do get lonely and I do sometimes wish I could have somebody, but this time I spent trying to figure things out and her refusing me was the best thing ever to happen to me.
I realized that the right person doesn't just come along and fix your problems. Love isn't this magical cure for all your ailments. You have to do that on your own. You have to be willing to work on and fix your problems, not sit around and mope as things go to shit like you are some victim. I had to lose something special to really appreciate that fact. Of course, if he doesn't mind the way things are going for him, he may not realize this and continue on until he loses something and it really hits home. But I don't think you can make him realize anything he doesn't want to listen to, and to win him back would just bring heartbreak again.
You have to really cut him out. Resist that temptation to facebook stalk him, to call him because you know that deep down you are hoping to try and get him back through that. It's not getting you anywhere, and you are naive to think otherwise. It took me a better part of the year to really realize some things and start implementing those changes in my every day life to make me a better person, let alone a better boyfriend. And even now I still relapse on bad habits and bad decisions that I used to make. Everybody is different but I saw way too much of myself in your ex. Why would he ever want to change if he can always have you when he feels like it, and you exhibit that with your need to "talk". Even if it was totally unintentional, that's how it can be perceived. Unfortunately you can't change the way he thinks and reads those signs.
And I know you may have not found something with somebody else but this guy cannot and will not be the only guy for you. He's your first everything and he will always hold a special place in your heart. And for most people, these kind of guys are few and far between. But if you are focusing on him, the other guys you pass by everyday are going to fly under the radar. They won't ever have a fair chance. You can't help how you feel, but if you are clinging onto him for dear life, you aren't helping yourself out in that respect.
I hope I helped. A little bit of word vomit but it should make some sense...?
Waking up next to a beautiful girl,
Step outside and say hello to my beautiful world.