You should find an Al-anon meeting in your area. I dont think you should be living together he needs to feel all the effects of his decision. Financial and emotional of being separated from his kids on a daily basis.
You have every right to be angry. But you should not react out of anger.
Please go be with family and friends today. You dont need to decide right now what your next steps are.
---- M 39 H 35 D5,D4 M 4 T 9 ILYBNILWY 5/18/11 Left 7/11/11 Divorced 12/1/13