"Philosophically speaking, morally speaking or whatever... you're EX was not then, and is not under any obligation now, when it comes to your emotional well being or personal welfare.
He doesn't owe you a thing!!!"
The only thing that comes to mind after reading all this is ......"Ouch!". 
So not only did he put me through hell, not only did he leave me in hell but now I'm supposed to climb out of it all on my own....
Great.