Dreaming about an ex-partner at a significant event like a christening can symbolize a few different things. It may reflect unresolved feelings or thoughts about your past relationship, particularly if you still have emotional ties to that person. The christening itself often represents new beginnings, innocence, or a significant life change, which could indicate that you are processing your own feelings about moving on or changes in your life.

This dream could also suggest that you are considering how your past has influenced your present, especially regarding relationships and family. It might be an opportunity for you to reflect on what you've learned from your past experiences and how they shape your current mindset.

If you felt positive emotions during the dream, it might indicate acceptance and closure, while negative feelings could suggest lingering doubts or sadness about the past. Consider what the dream makes you feel and how it connects to your current life situation. Reflecting on your own personal growth since the relationship can be beneficial as well.