Dreaming about a past ex can be quite common and often reflects unresolved feelings or nostalgia. In your dream, seeing her happy and enjoying your time together may indicate that you have fond memories of your relationship. The laughter and joy you experienced together could symbolize a desire for happiness and connection in your life.
The setting of your home suggests a sense of comfort and safety, which might indicate your longing for stability and emotional fulfillment. Riding bikes together can represent a journey or shared experiences, highlighting a sense of companionship and freedom.
Overall, this dream may suggest that you are reflecting on past relationships and what happiness looks like for you. It could also indicate a wish to find similar joy in your current life or relationships. Consider what aspects of this dream resonate with you and how they might relate to your current feelings or desires.