Dreams involving an ex-partner can often signify unresolved feelings or reflections on your past relationship. In your dream, seeing your soon-to-be ex-husband with a GPS tether suggests feelings of confinement or being restricted, perhaps indicating that he feels trapped by his circumstances or choices. The presence of the screen with the message "in custody" may symbolize feelings of judgment or consequences related to his actions or your relationship.
The conversation where you both catch up and the kiss might represent nostalgia or a desire for connection, hinting at a longing for the familiarity and comfort of your relationship despite its challenges. His question, "are you sure?" could reflect your own uncertainty about moving forward or the decisions you are facing regarding your future.
Overall, this dream seems to explore themes of closure, reflection, and the emotional complexities of your past relationship. It may be helpful to consider what aspects of your relationship you are still processing and whether there are feelings of regret, forgiveness, or healing that need to be addressed.