I doubt he was, from what I know. I don't think they parted on openly hostile terms and Ralph seemed largely to actually pine for her afterward. Been catching up on the old Ralph lore and in one video where Faith is present, Ralph seems to openly be saying he still 'loves' Nora. I say that in quotes but the impression I got from the way Ralph talked about her was that he actually did love her as much as someone like him could love another person. On the few occasions I recall Ralph mentioning her after the separation, he always talks about her in fairly genuine terms of having liked her sense of humor and felt that she was smart. Just sort of stuck out in my memory since it's very different than how he talks about Faith and Pantsu as dumb objects.