I know that people can grow close to their children's partners and want to stay in touch even if the relationship doesn't work out. This is not the case here. My live-in boyfriend's ex lived far away and hardly met his family, but she still likes, loves, comments and laughs at virtually everything they post. Sometimes they reciprocate, but not nearly as much. I feel invaded somehow, because she obviously hasn't let go. He was the one who left. AIBU?