Your dream is rich with imagery and emotion, and it can be interpreted in various ways.

In the first part of your dream, the toy store and the presence of the children suggest a sense of playfulness and curiosity. The act of looking at LEGO could symbolize creativity and the building of new ideas or aspects of your life. The children's intuitive nature may represent a part of yourself that is open to exploration and wonder, perhaps a reminder to embrace your own curiosity.

The transition to the furniture section and the couch symbolizes comfort and familiarity. However, your realization that the couch isn't as comfortable as you expected may indicate feelings of disappointment or the realization that some aspects of comfort in your life aren't as fulfilling as they seem. The Christmas tree, which evokes a sense of magic and nostalgia, signifies a longing for simpler, joyful times—perhaps a connection to your past or a desire to reclaim the innocence of childhood.

Crying on the couch suggests a release of emotion, possibly indicating that you're processing feelings related to your past, your childhood, or even unresolved issues in your life. This emotional response is a healthy part of reflecting on those experiences.

In the second part of your dream, the beach and your ex-girlfriend's family represent familiarity but also potential unresolved feelings. The quietness among the group may reflect a sense of disconnect or a lack of communication in your relationships, both past and present. Your desire to engage in conversation and the sexual thoughts you have about your ex could indicate a yearning for connection and intimacy.

The presence of the puppy pug held by her brother could symbolize innocence, joy, and new beginnings. Puppies often represent new relationships or aspects of life that are playful and uncomplicated, suggesting a desire to reconnect with those simpler joys.

Overall, this dream may encourage you to reflect on your emotional needs, your past relationships, and how you can bring more playfulness and creativity into your current life. It also highlights the importance of communication and connection in your relationships. Consider what aspects of your past you may want to revisit or integrate into your present, and how you can foster open communication with those around you.