So sorry to hear about your added grief. I know what you are going through as my DH and I had similar problems when his dad died 12 years ago. Please believe me when I say time heals all. I believe our marriage became stronger after this happened. Be there for him if he wants you to and even if he doesn't. People say hurtful things when they are upset and distraught. (I was told I was heartless) Please be strong and have faith that you will get through this. In time he will heal. All people grieve differently and we need to allow them to grieve in their own way no matter what that grieving process is.
I agree with David W that maybe going to Puerto Rico would be good therapy for your DH and you.
My thoughts and prayers go out to you and your DH for a peaceful healing. God bless you both.