The central theme of your dream appears to revolve around unresolved emotions and the struggle to express your true feelings. Symbolically, the theater setting suggests a stage where internal dramas and unconscious conflicts are played out. The presence of the artist Lil Yachty and his song "Say Something" underscores the theme of communication and the struggle to articulate emotions.

In Jungian terms, your former partner represents an Anima figure, a part of your psyche that embodies feminine qualities and emotions. The act of her hugging you again indicates a resurgence of emotional attachment and confusion, signaling that these feelings remain unresolved within you. The two friends who leave the scene symbolize the departure of distractions or external influences, creating a space where you are left alone with your inner emotional reality.

Your inability to stop expressing your true feelings in the dream suggests an overwhelming need to confront and communicate these emotions. This is a confrontation with your Shadow, the part of the psyche that contains suppressed desires and fears. The fact that this experience culminates in a nightmare indicates significant psychological tension and anxiety about these unexpressed feelings.

The nightmare's setting in a theater watching a performance signifies that this is not just a personal issue but part of a larger, collective experience shared by many. The theater represents the collective unconscious, where archetypal themes and universal struggles are enacted. Lil Yachty's song "Say Something" serves as a call from your unconscious to confront and articulate these hidden emotions, emphasizing the necessity of communication in the individuation process.

The dream's transition from a public performance to a private emotional outpouring mirrors your real-life transition from a relationship to a state of emotional uncertainty and unresolved feelings. This shift highlights the difficulty of moving from shared experiences to personal introspection.

The psychological conflict here lies in your struggle to reconcile your feelings for your ex-partner with the reality of your different lifestyles. This tension is mirrored in the dream by your uncontrollable emotional expression, indicating a need for inner balance and harmony. The dream suggests that you are in the process of individuation, seeking to integrate these conflicting parts of yourself into a coherent whole.

To address this conflict, consider actively engaging with your emotions through introspection or therapy. Reflect on what these feelings mean to you and how they align with your current life circumstances. One actionable piece of advice is to write a letter to your ex-partner—not necessarily to send, but as an exercise in articulating and understanding your emotions. This act of writing can serve as a means of integrating these unresolved feelings, aiding your journey towards psychological wholeness.