Do not agree to anything w/your runaway h concerning a divorce or splitting up of the assets. As OwnIt and Peace have pointed out, get some good, solid legal advice for a lawyer. Now is the time to start looking around for one that may have a free consultation. If not, pay the for the first hour and trust me, it will be well worth the money to find out what you are entitled to. Once you know what you are entitled to, do not share that info w/your h. This is you ace in pocket that you need to keep to yourself for now.
Sure, he's going to want to do things w/o having a lawyer involved and they all think that we can come to a civil agreement...one that is all for them and little left for us. Just a word of caution, once he realizes that you know the drill and have a good handle or what you are entitled to and you stand your ground, he may very well become angry and nasty. If he does, walk away, do not attempt to reason w/him. He's got to learn he can't have everything his way and he's the reason that a divorce is taking place.
Knowledge is power. Gather as much information as you can so that you know your rights. Stand tall, hold your head up high and be ready for anything at this point.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.