I threaten to break legs but what I do is break hearts

It seems that's all I do in my life is break hearts. I guess that's what I was put on this earth to do. But while I was breaking your heart my heart was already destroyed. My heart is too broken and confused to be handled by anyone. So I'm going to lock it away. Maybe forever. Maybe no one I meet will know I have one. Maybe everone who ever thought they knew me will forget I ever had one. So destroy me know while you have the chance. Destroy me so I can never hurt again. I'm sorry you got stuck in my path of destruction. I'm going down. I fall fast and hard but I bouce back quick, weather from the floor or reality. I always bounce back.