Your dream appears to reflect your current emotional turmoil and the conflict you are experiencing after your heartbreak. The house renovation symbolizes your desire to rebuild and improve your emotional state or life situation. The contrast between the exterior and the dilapidated interior of the house suggests that things may seem fine on the surface, but deep down, there are unresolved issues and pain that need to be addressed.

The flashes of the finished product could represent your hopes and dreams for a better outcome, but the unsettling feeling indicates that you are aware that returning to this relationship may not bring the happiness you seek. This tension between hope and reality is palpable in your dream.

The aggressive dog may symbolize the intense emotions you are grappling with—anger, hurt, and perhaps even a sense of being attacked by your own feelings or memories of the relationship. The dog's supernatural strength could indicate how powerful these feelings are and how they can overwhelm you, much like the pain you experienced in the relationship.

Lastly, your enjoyment of the pain in the dream might reflect a complex relationship with your suffering; sometimes, we cling to pain because it feels familiar or because it’s tied to love and attachment. This could suggest that you may be caught in a cycle of wanting to return to someone who has caused you pain, despite knowing it’s not the healthiest choice.

Your dream is a call to reflect on your feelings and the current situation. It may be beneficial to take some time to consider what you truly want and what is best for your emotional well-being. It might also be helpful to seek support from friends or a professional who can help you process these feelings and make a decision that aligns with your self-worth and happiness.