I can only "assume" the reason my xh got angry is because he didn't think I would call his bluff and get the draft papers drawn up. What was so funny is that I had them drafted up w/exactly what he wanted stated in them. From the time he received the draft separation papers until several years after the divorce, he was a nasty, angry person.
Some of them do get angry when presented w/papers because, in their minds, we will be right where they left us and that we would never, ever want a separation/divorce in place. They do not like to make decisions and heaven knows, some will stall and find excuses for not doing the work to get the legal matters taken care of.
They are very conflicted souls and only operate on emotions. Trust me, when dealing w/a MLCer and trying to get separation/divorce papers in place is not a "normal" process by any means.
You need to look at him as a roommate. You shop for yourself, you cook for yourself and do not clean his cave. If you haven't read HaWho's threads, please do so. They would help you with detachment and give you a better understanding of a live in MLCer.
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.