Dreaming of an ex, especially in a setting that holds significance like their hometown, can evoke various emotions and meanings. Seeing your ex in their teenage version may represent a nostalgic reflection on your past relationship. It could indicate that you are processing unresolved feelings or memories associated with that time in your lives.

Standing up for him in the dream suggests that you may still hold a protective or supportive sentiment towards him, even if the relationship has ended. This could reflect your desire for closure or a need to reconcile feelings of care and affection.

Overall, this dream may be prompting you to reflect on your past, your feelings about the relationship, and how it has shaped who you are today. It might be beneficial to consider what aspects of that relationship you still value or need to let go of. Exploring these feelings can lead to personal growth and a better understanding of your emotional landscape.