Well, stbx's friend, who had invited me to stay went to stbx's house warming party at the weekend. Which is fine, but he was texting me about what he was up to at the weekend and just didn't mention it. Of course he doesn't have to but now he and ow are friends on FB and I just don't want to be involved in anything to do with stbx and ow life anymore. And that situation feels very weird to me and I do not want the drama or the feelings to do with anything like that anymore so I think I will cancel my trip and cancel him. It isn't something I want or need in my life at the moment and doesn't help with the moving forward.
Of course no email from stbx in reply to mine. It's fine, closing a chapter and moving on.