If you have dreamed about your ex giving a key in your dream: Due to changes in the flow, you may need to seek help from others and you may find the help you are looking for. A problem that a male figure may create or a subject related to where you live may require attention. To give a key to your ex in your dream refers to reconciliation with the past, a new period in your life, a more moderate approach to your loved one and a better life.