Dreams like yours can be quite complex and often reflect deep-seated emotions and unresolved issues. Here are some potential interpretations of the key elements in your dream:

1. Reconnecting with an old friend: The presence of your former friend may symbolize unresolved feelings or past conflicts. It could indicate a desire to heal old wounds or reflect on past relationships. Her jealousy in the dream might represent your concerns about competition or comparisons in your current life.
2. Husband’s infidelity: Your husband’s actions in the dream might represent feelings of betrayal, insecurity, or fear in your waking life. It could also symbolize your struggle with trust and the emotional turmoil surrounding your relationship.
3. The concert setting: Concerts often symbolize enjoyment and connection. Your husband joining you at the concert may signify a longing for better times together or a desire for reconciliation. However, the contrasting feelings of anger and sadness also highlight the conflict in your relationship.
4. Conflict with the girlfriend: Meeting the girl who is involved with your husband could reflect feelings of jealousy, anger, or inadequacy. This part of the dream might be your subconscious processing feelings of betrayal and competition.
5. The bridge: Bridges often symbolize transitions or obstacles. Your determination to cross the bridge despite warnings may indicate your desire to confront challenges or move forward in your life, despite the risks involved.
6. Intimacy and conflict: The intimate moment followed by conflict suggests a struggle between desire and betrayal, representing a complex emotional landscape where love, anger, and hurt coexist. It may reflect your inner conflict about intimacy and trust.
7. Blocking and anger: Your feelings of anger and sadness, culminating in being blocked, indicate a need to set boundaries or detach from toxic relationships. This could signify your desire to protect yourself emotionally.

Overall, this dream appears to be a reflection of your emotional struggles regarding trust, betrayal, and the complexity of relationships in your life. It may be helpful to reflect on these feelings and consider what steps you can take to address them in your waking life. Journaling or talking to a trusted friend might also provide clarity and support as you navigate these emotions.