An ex appearing in a dream is rarely read as a wish to return. Tradition takes it as an old pattern, lesson or unfinished feeling resurfacing because something present echoes it. A calm or friendly conversation with an ex is read as peace being made with that time of your life. An argument is taken as anger or hurt that never found its words. Getting back together in the dream is read less as desire for the person than as longing for something you had then — feeling chosen, younger or freer. Dreaming of an ex who ignores you is taken as the fear of being forgotten. It can help to ask what in your current life feels familiar in the same way.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.