Dreams about engagements and weddings often symbolize commitment, change, and the desire for connection. In your dream, you accepted a proposal, which could represent a significant decision or commitment in your waking life, whether it's related to your relationship or another area.

The fact that you wanted to prevent your family from posting on Facebook might suggest feelings of anxiety or pressure about public perception and how your personal life is viewed by others. You may be grappling with the expectations that come with such a commitment.

The ring itself is a powerful symbol. The large and ugly parts may represent aspects of the relationship or commitment that you find overwhelming or unappealing, while the beautiful diamond and band signify the core value and beauty of your connection. The act of playing with the ring and breaking off the excess metal could symbolize your desire to strip away any unnecessary pressures or expectations, leaving you with what truly matters.

Seeing your best friend from third grade and crying together might indicate a need for emotional support as you navigate these changes. It could reflect nostalgia for simpler times or the importance of having a supportive network during significant life transitions.

Overall, this dream could be encouraging you to focus on what truly matters in your life and relationships, while also being mindful of how external opinions influence your feelings. Consider what parts of your life or commitments you want to embrace and which aspects you may want to let go of.