Hey, how much longer do you think you can handle all this hurt and misery?
Your not happy nor have been for some time,he is not happy.
Could it be possibe that apart you both would be happier people and better parents..
Don't get me wrong,your son will one day be grown and gone to college,married etc,then what?
I was on my own for years after my marriage ended,that was through choice though..
In a way for me,it was a relief when it was over.
Find some head space in all this,if that means being apart for awhile. So be it.