First off I'm sorry for your loss, but I can see how your feeling. He used you, and you felt betrayed, I guess. I think he should have left you some kind note to apologize for using you that way. That's if it was purposeful, and not an accident on his part. I highly doubt that though. I think he should at least have told you the reasons for what he did. Instead he left you with questions and guilt. However, it's possible he might not have been in his right mind. I don't know what happens to the human body or the brain when this kind of thing happens. So maybe it's possible that he wasn't really planning it.
I hope I haven't really hurt you or upset you with this comment. I really think you are wonderful storyteller.
Rob