Was you H physically threatening last night? What all of a sudden makes him insane? You say you feel pressured. I know your H told you what would make him turned on. But is he now volleying this on a daily basis. If so and it is now scaring you maybe you need to get away from him for a few days. Also bring it up in your next C meeting.
I do have a question does your H have a person in mind? If so and it is someone your H knows what type of a relationship does your H have with this person? I am really wondering if the fantasy is about another male and not you. You are the scapegoat the one to reel in and bring to light his truer fantasy. I may be real off base. But it is a possibility.