Dreams about an ex-partner, especially in an idealized context, can often reflect unresolved feelings or a longing for the positive aspects of the relationship. In your case, dreaming that you and your abusive ex are back together and everything is happy may indicate a desire for closure or a reconciliation with your past.

These dreams might also highlight your subconscious grappling with the trauma of the past, wishing for a different outcome, or even a reflection of your current emotional state where you crave love and affection.

Consider reflecting on the emotions you experience during these dreams and how they relate to your waking life. It may be helpful to explore these feelings further, possibly through journaling or speaking with a therapist, to gain clarity on your healing journey and to ensure you are moving forward in a healthy way.