When I was a teenager, I threw a hammer at my sister, narrowly missing her head. Now, all these years later, I cannot remember what we were fighting about. What I do know is that when I was younger, I had terrible wounds. These wounds, such as feelings of being ignored, pushed around, not heard, not cared about, etc., caused me to at times to erupt.
Loving kindness is incredibly important in our relationships. It means we have an active interest in others, we are friendly and open hearted. We have good will and want the best for our partner and others.