Dreams often reflect our subconscious thoughts, emotions, and experiences, and your dream seems to carry profound themes of fear, past relationships, and a sense of safety.

1. Setting in Childhood Home: Dreaming of a childhood home can symbolize nostalgia and unresolved issues from your past. It may indicate a need to confront old emotions or experiences that still affect you.
2. Ex and Confrontation: Your ex being attacked in the dream could represent feelings of vulnerability or fear regarding that relationship. It may reflect unresolved emotions about your past with him, possibly indicating you feel protective over him or anxious about your own safety in relation to your past experiences.
3. Fear and Safety: The feeling of fear throughout the dream suggests you may be dealing with anxiety or a sense of insecurity in your waking life. The presence of masked men might symbolize hidden threats or unresolved issues that you're not fully confronting.
4. The Woman and the Delivery: The woman who spoke to you might represent a guiding figure or a part of yourself that is trying to provide comfort amidst chaos. The box spring delivery could signify new beginnings or changes in your life, but your anxiety about it suggests you may feel unprepared for these changes.
5. Declining to Go Out: Your hesitation to join Ashley and her friends may indicate a reluctance to engage with social situations or the fear of moving on from past relationships. It also suggests a preference for familiar settings over new experiences.
6. Calling Your Ex: The impulse to check on your ex might reflect lingering feelings or a sense of responsibility towards him, but feeling afraid to do so suggests unresolved fears about communication or the outcomes of reaching out.
7. Club and the Singer: The club setting and the singer being associated with the person who broke in could symbolize the idea of being trapped in a cycle of fear or anxiety, where past experiences continue to haunt you.

Overall, your dream seems to reflect a struggle with past relationships, fears of vulnerability, and a desire for safety and reassurance. It might be beneficial to reflect on any unresolved feelings regarding your ex and consider ways to address your fears in your waking life. Engaging in open conversations with trusted friends or seeking support could help you process these emotions and find a sense of security moving forward.