(((LynD)))
You are going through a very hard part of the journey. It does become easier, as time passes and you get some assistance from others. But, it isn't an overnight process.
You didn't mention whether or not you have any children together ~ the children do complicate matters in divorce. The court makes the children a completely separate issue, in order to help the children adjust more easily to the huge changes in their lives. They simply want all children to have healthy, positive relationships with both parents if at all possible.
Why your husband did what he did is unknown. Maybe he doesn't even know why. It doesn't really matter why now though, does it? The anger and pain are still there. It takes time to work through those emotions ~ and to stop questioning all kinds of things. It's been 1 1/2 years for me, and I still question things from time to time. (We do have 2 young children though, which requires frequent interractions and some communication.)

I hope that things become easier for you soon!

Take care!