Hopeless,
I'm sorry things are so difficult for you right now.
My husband has been a real pain in the neck lately, and somedays I would just like to bail and go somewhere else. My loyalty keeps me hanging on.
You are the person who has to live with your decisions. No matter how hard it is for your new-old friend to be hurt and mad at you right now, I think that is less of a problem than having to deal with your conscience if you didn't help your husband right now, and he killed himself.
EJ