Dreaming of arguing with an ex, especially after not having spoken for years, can symbolize unresolved feelings or conflicts from that relationship. This dream might reflect lingering emotions, whether they are anger, regret, or even nostalgia. It may indicate that you are processing past experiences or trying to come to terms with the relationship's end.

Consider what specific issues you were arguing about in the dream. This can provide insight into what you might still be grappling with in your waking life. Are there lessons from that relationship that you need to confront or learn from?

Additionally, this dream could signify a desire for closure or the need to express feelings that were left unspoken. It might be helpful to reflect on your current emotional state and how your past experiences influence your present relationships.

If the dream leaves you feeling unsettled, it may be worthwhile to journal about your feelings or talk to someone you trust to gain clarity and peace regarding your past.