Do you attend a church? Do you know anyone on the staff who can offer counseling? I pray for reconciliation in your marriage, because divorce is a destructive process. I pray for your safety. I pray your husband would be open to seeking help and seeking God. If he has defined himself by his job, as so many of us have done, then when that security is threatened he can feel lost. At least he is willing to talk - that is a good thing, although the conversation is probably very volatile.
So much good advice here, scripture, prayers. Seek help through your church and professional counselors who can guide your marriage through this storm. In the healing process following my divorce, I came to understand we forgot God was part of our marriage. We were living for ourselves, and not praying together.
Marriage is a covenant. Remember your vows. Could you possibly have a conversation about happier times? Are there pictures that might trigger those memories?