I can't say for sure, but I doubt your ex wanted to let go. It sounds similar to how I'd react, and have reacted, and do react, in situations where I know I should just leave it alone and move on, but deeply don't want to and still feel attached. If this has been ongoing for months or weeks, it seems more likely that's the case.
As for your issues, have you considered your childhood? There's a possibility you do have AS, or traits of it, but it's also important to take into account the way you grew up emotionally. We learn how to react and express emotions as children from the adults around us. Children are extremely susceptible to the emotional problems of their parents, and how their parents deal with emotions is a very important factor in how they later deal with emotional situations.
Let me give you an example of how powerful a problem that can be. When I read one of your blogs, it shocked me just how much you sounded like my boyfriend. My boyfriend, too, wants to get tested for AS, and may have traits (his mom does). But even still, it looks far more likely that his emotional problems are based on his childhood experiences of how those around him treated emotions. He's emotionally repressed, very severely. He has meltdowns and outbursts, when all his emotions finally pour forward. He has schizoid traits, putting up a shell much of the time, which has made him seriously depersonalized, strange, clumsy, and generally pretty nuts.
But then there are times when he seems more capable, as he learns, and he seems to pick up on emotions readily. The issue is that he is then completely stopped when it comes to executing the proper expression. He suffers from a lot of self delusion, loss of self and fear. This is definitely not just because of any AS traits he may have--it's because of what his parents raised him with. They're completely wrecks as well, emotionally suppressed, and mentally ill.
I'm not suggesting this is what's wrong with you, but it's something to consider, and it's often a problem that gets overlooked. It's also important to consider that those who suffer from AS and similar disorders from birth are likely to be more susceptible to emotional problems in their environment, or/and react differently than NTs to both normal and excessive emotional problems within the family.